diff --git a/README.md b/README.md
index 75094d39db..f6d14bb840 100644
--- a/README.md
+++ b/README.md
@@ -168,7 +168,7 @@ Star Dify on GitHub and be instantly notified of new releases.
 > Before installing Dify, make sure your machine meets the following minimum system requirements:
 > 
 >- CPU >= 2 Core
->- RAM >= 4GB
+>- RAM >= 4 GiB
 
 </br>
 
diff --git a/README_CN.md b/README_CN.md
index 4553524ce5..689f98ccf4 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -174,7 +174,7 @@ Dify 是一个开源的 LLM 应用开发平台。其直观的界面结合了 AI
 在安装 Dify 之前，请确保您的机器满足以下最低系统要求：
 
 - CPU >= 2 Core
-- RAM >= 4GB
+- RAM >= 4 GiB
 
 ### 快速启动
 
diff --git a/api/app.py b/api/app.py
index a3efabf06c..ed214bde97 100644
--- a/api/app.py
+++ b/api/app.py
@@ -1,5 +1,7 @@
 import os
 
+from configs import dify_config
+
 if os.environ.get("DEBUG", "false").lower() != "true":
     from gevent import monkey
 
@@ -36,17 +38,11 @@ if hasattr(time, "tzset"):
     time.tzset()
 
 
-# -------------
-# Configuration
-# -------------
-config_type = os.getenv("EDITION", default="SELF_HOSTED")  # ce edition first
-
-
 # create app
 app = create_app()
 celery = app.extensions["celery"]
 
-if app.config.get("TESTING"):
+if dify_config.TESTING:
     print("App is running in TESTING mode")
 
 
@@ -54,15 +50,15 @@ if app.config.get("TESTING"):
 def after_request(response):
     """Add Version headers to the response."""
     response.set_cookie("remember_token", "", expires=0)
-    response.headers.add("X-Version", app.config["CURRENT_VERSION"])
-    response.headers.add("X-Env", app.config["DEPLOY_ENV"])
+    response.headers.add("X-Version", dify_config.CURRENT_VERSION)
+    response.headers.add("X-Env", dify_config.DEPLOY_ENV)
     return response
 
 
 @app.route("/health")
 def health():
     return Response(
-        json.dumps({"pid": os.getpid(), "status": "ok", "version": app.config["CURRENT_VERSION"]}),
+        json.dumps({"pid": os.getpid(), "status": "ok", "version": dify_config.CURRENT_VERSION}),
         status=200,
         content_type="application/json",
     )
diff --git a/api/app_factory.py b/api/app_factory.py
index 04654c2699..aba78ccab8 100644
--- a/api/app_factory.py
+++ b/api/app_factory.py
@@ -10,9 +10,6 @@ if os.environ.get("DEBUG", "false").lower() != "true":
     grpc.experimental.gevent.init_gevent()
 
 import json
-import logging
-import sys
-from logging.handlers import RotatingFileHandler
 
 from flask import Flask, Response, request
 from flask_cors import CORS
@@ -27,6 +24,7 @@ from extensions import (
     ext_compress,
     ext_database,
     ext_hosting_provider,
+    ext_logging,
     ext_login,
     ext_mail,
     ext_migrate,
@@ -70,43 +68,7 @@ def create_flask_app_with_configs() -> Flask:
 
 def create_app() -> Flask:
     app = create_flask_app_with_configs()
-
-    app.secret_key = app.config["SECRET_KEY"]
-
-    log_handlers = None
-    log_file = app.config.get("LOG_FILE")
-    if log_file:
-        log_dir = os.path.dirname(log_file)
-        os.makedirs(log_dir, exist_ok=True)
-        log_handlers = [
-            RotatingFileHandler(
-                filename=log_file,
-                maxBytes=1024 * 1024 * 1024,
-                backupCount=5,
-            ),
-            logging.StreamHandler(sys.stdout),
-        ]
-
-    logging.basicConfig(
-        level=app.config.get("LOG_LEVEL"),
-        format=app.config.get("LOG_FORMAT"),
-        datefmt=app.config.get("LOG_DATEFORMAT"),
-        handlers=log_handlers,
-        force=True,
-    )
-    log_tz = app.config.get("LOG_TZ")
-    if log_tz:
-        from datetime import datetime
-
-        import pytz
-
-        timezone = pytz.timezone(log_tz)
-
-        def time_converter(seconds):
-            return datetime.utcfromtimestamp(seconds).astimezone(timezone).timetuple()
-
-        for handler in logging.root.handlers:
-            handler.formatter.converter = time_converter
+    app.secret_key = dify_config.SECRET_KEY
     initialize_extensions(app)
     register_blueprints(app)
     register_commands(app)
@@ -117,6 +79,7 @@ def create_app() -> Flask:
 def initialize_extensions(app):
     # Since the application instance is now created, pass it to each Flask
     # extension instance to bind it to the Flask application instance (app)
+    ext_logging.init_app(app)
     ext_compress.init_app(app)
     ext_code_based_extension.init()
     ext_database.init_app(app)
@@ -187,7 +150,7 @@ def register_blueprints(app):
 
     CORS(
         web_bp,
-        resources={r"/*": {"origins": app.config["WEB_API_CORS_ALLOW_ORIGINS"]}},
+        resources={r"/*": {"origins": dify_config.WEB_API_CORS_ALLOW_ORIGINS}},
         supports_credentials=True,
         allow_headers=["Content-Type", "Authorization", "X-App-Code"],
         methods=["GET", "PUT", "POST", "DELETE", "OPTIONS", "PATCH"],
@@ -198,7 +161,7 @@ def register_blueprints(app):
 
     CORS(
         console_app_bp,
-        resources={r"/*": {"origins": app.config["CONSOLE_CORS_ALLOW_ORIGINS"]}},
+        resources={r"/*": {"origins": dify_config.CONSOLE_CORS_ALLOW_ORIGINS}},
         supports_credentials=True,
         allow_headers=["Content-Type", "Authorization"],
         methods=["GET", "PUT", "POST", "DELETE", "OPTIONS", "PATCH"],
diff --git a/api/configs/feature/__init__.py b/api/configs/feature/__init__.py
index a941c8b673..72beccd49b 100644
--- a/api/configs/feature/__init__.py
+++ b/api/configs/feature/__init__.py
@@ -32,6 +32,21 @@ class SecurityConfig(BaseSettings):
         default=5,
     )
 
+    LOGIN_DISABLED: bool = Field(
+        description="Whether to disable login checks",
+        default=False,
+    )
+
+    ADMIN_API_KEY_ENABLE: bool = Field(
+        description="Whether to enable admin api key for authentication",
+        default=False,
+    )
+
+    ADMIN_API_KEY: Optional[str] = Field(
+        description="admin api key for authentication",
+        default=None,
+    )
+
 
 class AppExecutionConfig(BaseSettings):
     """
diff --git a/api/controllers/console/admin.py b/api/controllers/console/admin.py
index 6a61ffc234..bbb4284b65 100644
--- a/api/controllers/console/admin.py
+++ b/api/controllers/console/admin.py
@@ -1,4 +1,3 @@
-import os
 from functools import wraps
 
 from flask import request
@@ -7,6 +6,7 @@ from sqlalchemy import select
 from sqlalchemy.orm import Session
 from werkzeug.exceptions import NotFound, Unauthorized
 
+from configs import dify_config
 from constants.languages import supported_language
 from controllers.console import api
 from controllers.console.wraps import only_edition_cloud
@@ -17,7 +17,7 @@ from models.model import App, InstalledApp, RecommendedApp
 def admin_required(view):
     @wraps(view)
     def decorated(*args, **kwargs):
-        if not os.getenv("ADMIN_API_KEY"):
+        if not dify_config.ADMIN_API_KEY:
             raise Unauthorized("API key is invalid.")
 
         auth_header = request.headers.get("Authorization")
@@ -33,7 +33,7 @@ def admin_required(view):
         if auth_scheme != "bearer":
             raise Unauthorized("Invalid Authorization header format. Expected 'Bearer <api-key>' format.")
 
-        if os.getenv("ADMIN_API_KEY") != auth_token:
+        if dify_config.ADMIN_API_KEY != auth_token:
             raise Unauthorized("API key is invalid.")
 
         return view(*args, **kwargs)
diff --git a/api/controllers/console/datasets/file.py b/api/controllers/console/datasets/file.py
index 51be7e7a7d..17d2879875 100644
--- a/api/controllers/console/datasets/file.py
+++ b/api/controllers/console/datasets/file.py
@@ -30,13 +30,12 @@ class FileApi(Resource):
     @account_initialization_required
     @marshal_with(upload_config_fields)
     def get(self):
-        file_size_limit = dify_config.UPLOAD_FILE_SIZE_LIMIT
-        batch_count_limit = dify_config.UPLOAD_FILE_BATCH_LIMIT
-        image_file_size_limit = dify_config.UPLOAD_IMAGE_FILE_SIZE_LIMIT
         return {
-            "file_size_limit": file_size_limit,
-            "batch_count_limit": batch_count_limit,
-            "image_file_size_limit": image_file_size_limit,
+            "file_size_limit": dify_config.UPLOAD_FILE_SIZE_LIMIT,
+            "batch_count_limit": dify_config.UPLOAD_FILE_BATCH_LIMIT,
+            "image_file_size_limit": dify_config.UPLOAD_IMAGE_FILE_SIZE_LIMIT,
+            "video_file_size_limit": dify_config.UPLOAD_VIDEO_FILE_SIZE_LIMIT,
+            "audio_file_size_limit": dify_config.UPLOAD_AUDIO_FILE_SIZE_LIMIT,
         }, 200
 
     @setup_required
diff --git a/api/controllers/files/tool_files.py b/api/controllers/files/tool_files.py
index 104b7cd9bb..a298701a2f 100644
--- a/api/controllers/files/tool_files.py
+++ b/api/controllers/files/tool_files.py
@@ -42,10 +42,10 @@ class ToolFilePreviewApi(Resource):
             stream,
             mimetype=tool_file.mimetype,
             direct_passthrough=True,
-            headers={
-                "Content-Length": str(tool_file.size),
-            },
+            headers={},
         )
+        if tool_file.size > 0:
+            response.headers["Content-Length"] = str(tool_file.size)
         if args["as_attachment"]:
             response.headers["Content-Disposition"] = f"attachment; filename={tool_file.name}"
 
diff --git a/api/controllers/service_api/app/message.py b/api/controllers/service_api/app/message.py
index d9a9fad13c..ecff804adc 100644
--- a/api/controllers/service_api/app/message.py
+++ b/api/controllers/service_api/app/message.py
@@ -48,7 +48,7 @@ class MessageListApi(Resource):
         "tool_input": fields.String,
         "created_at": TimestampField,
         "observation": fields.String,
-        "message_files": fields.List(fields.String),
+        "message_files": fields.List(fields.Nested(message_file_fields)),
     }
 
     message_fields = {
diff --git a/api/controllers/web/file.py b/api/controllers/web/file.py
index c029a07707..6eeaa0e3f0 100644
--- a/api/controllers/web/file.py
+++ b/api/controllers/web/file.py
@@ -46,7 +46,7 @@ class RemoteFileInfoApi(WebApiResource):
             response = ssrf_proxy.head(decoded_url)
             return {
                 "file_type": response.headers.get("Content-Type", "application/octet-stream"),
-                "file_length": int(response.headers.get("Content-Length", 0)),
+                "file_length": int(response.headers.get("Content-Length", -1)),
             }
         except Exception as e:
             return {"error": str(e)}, 400
diff --git a/api/core/app/app_config/easy_ui_based_app/variables/manager.py b/api/core/app/app_config/easy_ui_based_app/variables/manager.py
index 126eb0b41e..2f2445a336 100644
--- a/api/core/app/app_config/easy_ui_based_app/variables/manager.py
+++ b/api/core/app/app_config/easy_ui_based_app/variables/manager.py
@@ -53,11 +53,11 @@ class BasicVariablesConfigManager:
                     VariableEntity(
                         type=variable_type,
                         variable=variable.get("variable"),
-                        description=variable.get("description", ""),
+                        description=variable.get("description") or "",
                         label=variable.get("label"),
                         required=variable.get("required", False),
                         max_length=variable.get("max_length"),
-                        options=variable.get("options", []),
+                        options=variable.get("options") or [],
                     )
                 )
 
diff --git a/api/core/app/app_config/entities.py b/api/core/app/app_config/entities.py
index d8fa08c0a3..6c6e342a07 100644
--- a/api/core/app/app_config/entities.py
+++ b/api/core/app/app_config/entities.py
@@ -2,7 +2,7 @@ from collections.abc import Sequence
 from enum import Enum
 from typing import Any, Optional
 
-from pydantic import BaseModel, Field
+from pydantic import BaseModel, Field, field_validator
 
 from core.file import FileExtraConfig, FileTransferMethod, FileType
 from core.model_runtime.entities.message_entities import PromptMessageRole
@@ -114,6 +114,16 @@ class VariableEntity(BaseModel):
     allowed_file_extensions: Sequence[str] = Field(default_factory=list)
     allowed_file_upload_methods: Sequence[FileTransferMethod] = Field(default_factory=list)
 
+    @field_validator("description", mode="before")
+    @classmethod
+    def convert_none_description(cls, v: Any) -> str:
+        return v or ""
+
+    @field_validator("options", mode="before")
+    @classmethod
+    def convert_none_options(cls, v: Any) -> Sequence[str]:
+        return v or []
+
 
 class ExternalDataVariableEntity(BaseModel):
     """
diff --git a/api/core/app/app_config/features/file_upload/manager.py b/api/core/app/app_config/features/file_upload/manager.py
index 6d301f6ea7..42beec2535 100644
--- a/api/core/app/app_config/features/file_upload/manager.py
+++ b/api/core/app/app_config/features/file_upload/manager.py
@@ -17,10 +17,13 @@ class FileUploadConfigManager:
         file_upload_dict = config.get("file_upload")
         if file_upload_dict:
             if file_upload_dict.get("enabled"):
+                transform_methods = file_upload_dict.get("allowed_file_upload_methods") or file_upload_dict.get(
+                    "allowed_upload_methods", []
+                )
                 data = {
                     "image_config": {
                         "number_limits": file_upload_dict["number_limits"],
-                        "transfer_methods": file_upload_dict["allowed_file_upload_methods"],
+                        "transfer_methods": transform_methods,
                     }
                 }
 
diff --git a/api/core/app/task_pipeline/based_generate_task_pipeline.py b/api/core/app/task_pipeline/based_generate_task_pipeline.py
index a43be5fdf2..51d610e2cb 100644
--- a/api/core/app/task_pipeline/based_generate_task_pipeline.py
+++ b/api/core/app/task_pipeline/based_generate_task_pipeline.py
@@ -53,7 +53,7 @@ class BasedGenerateTaskPipeline:
         self._output_moderation_handler = self._init_output_moderation()
         self._stream = stream
 
-    def _handle_error(self, event: QueueErrorEvent, message: Optional[Message] = None) -> Exception:
+    def _handle_error(self, event: QueueErrorEvent, message: Optional[Message] = None):
         """
         Handle error event.
         :param event: event
@@ -100,7 +100,7 @@ class BasedGenerateTaskPipeline:
 
         return message
 
-    def _error_to_stream_response(self, e: Exception) -> ErrorStreamResponse:
+    def _error_to_stream_response(self, e: Exception):
         """
         Error to stream response.
         :param e: exception
diff --git a/api/core/app/task_pipeline/workflow_cycle_manage.py b/api/core/app/task_pipeline/workflow_cycle_manage.py
index 138503d404..2abee5bef5 100644
--- a/api/core/app/task_pipeline/workflow_cycle_manage.py
+++ b/api/core/app/task_pipeline/workflow_cycle_manage.py
@@ -4,6 +4,8 @@ from collections.abc import Mapping, Sequence
 from datetime import datetime, timezone
 from typing import Any, Optional, Union, cast
 
+from sqlalchemy.orm import Session
+
 from core.app.entities.app_invoke_entities import AdvancedChatAppGenerateEntity, InvokeFrom, WorkflowAppGenerateEntity
 from core.app.entities.queue_entities import (
     QueueIterationCompletedEvent,
@@ -232,30 +234,30 @@ class WorkflowCycleManage:
         self, workflow_run: WorkflowRun, event: QueueNodeStartedEvent
     ) -> WorkflowNodeExecution:
         # init workflow node execution
-        workflow_node_execution = WorkflowNodeExecution()
-        workflow_node_execution.tenant_id = workflow_run.tenant_id
-        workflow_node_execution.app_id = workflow_run.app_id
-        workflow_node_execution.workflow_id = workflow_run.workflow_id
-        workflow_node_execution.triggered_from = WorkflowNodeExecutionTriggeredFrom.WORKFLOW_RUN.value
-        workflow_node_execution.workflow_run_id = workflow_run.id
-        workflow_node_execution.predecessor_node_id = event.predecessor_node_id
-        workflow_node_execution.index = event.node_run_index
-        workflow_node_execution.node_execution_id = event.node_execution_id
-        workflow_node_execution.node_id = event.node_id
-        workflow_node_execution.node_type = event.node_type.value
-        workflow_node_execution.title = event.node_data.title
-        workflow_node_execution.status = WorkflowNodeExecutionStatus.RUNNING.value
-        workflow_node_execution.created_by_role = workflow_run.created_by_role
-        workflow_node_execution.created_by = workflow_run.created_by
-        workflow_node_execution.created_at = datetime.now(timezone.utc).replace(tzinfo=None)
 
-        db.session.add(workflow_node_execution)
-        db.session.commit()
-        db.session.refresh(workflow_node_execution)
-        db.session.close()
+        with Session(db.engine, expire_on_commit=False) as session:
+            workflow_node_execution = WorkflowNodeExecution()
+            workflow_node_execution.tenant_id = workflow_run.tenant_id
+            workflow_node_execution.app_id = workflow_run.app_id
+            workflow_node_execution.workflow_id = workflow_run.workflow_id
+            workflow_node_execution.triggered_from = WorkflowNodeExecutionTriggeredFrom.WORKFLOW_RUN.value
+            workflow_node_execution.workflow_run_id = workflow_run.id
+            workflow_node_execution.predecessor_node_id = event.predecessor_node_id
+            workflow_node_execution.index = event.node_run_index
+            workflow_node_execution.node_execution_id = event.node_execution_id
+            workflow_node_execution.node_id = event.node_id
+            workflow_node_execution.node_type = event.node_type.value
+            workflow_node_execution.title = event.node_data.title
+            workflow_node_execution.status = WorkflowNodeExecutionStatus.RUNNING.value
+            workflow_node_execution.created_by_role = workflow_run.created_by_role
+            workflow_node_execution.created_by = workflow_run.created_by
+            workflow_node_execution.created_at = datetime.now(timezone.utc).replace(tzinfo=None)
+
+            session.add(workflow_node_execution)
+            session.commit()
+            session.refresh(workflow_node_execution)
 
         self._wip_workflow_node_executions[workflow_node_execution.node_execution_id] = workflow_node_execution
-
         return workflow_node_execution
 
     def _handle_workflow_node_execution_success(self, event: QueueNodeSucceededEvent) -> WorkflowNodeExecution:
diff --git a/api/core/hosting_configuration.py b/api/core/hosting_configuration.py
index 9b4080aef1..7f4af98330 100644
--- a/api/core/hosting_configuration.py
+++ b/api/core/hosting_configuration.py
@@ -1,8 +1,9 @@
 from typing import Optional
 
-from flask import Config, Flask
+from flask import Flask
 from pydantic import BaseModel
 
+from configs import dify_config
 from core.entities.provider_entities import ProviderQuotaType, QuotaUnit, RestrictModel
 from core.model_runtime.entities.model_entities import ModelType
 
@@ -43,32 +44,30 @@ class HostingConfiguration:
     moderation_config: HostedModerationConfig = None
 
     def init_app(self, app: Flask) -> None:
-        config = app.config
-
-        if config.get("EDITION") != "CLOUD":
+        if dify_config.EDITION != "CLOUD":
             return
 
-        self.provider_map["azure_openai"] = self.init_azure_openai(config)
-        self.provider_map["openai"] = self.init_openai(config)
-        self.provider_map["anthropic"] = self.init_anthropic(config)
-        self.provider_map["minimax"] = self.init_minimax(config)
-        self.provider_map["spark"] = self.init_spark(config)
-        self.provider_map["zhipuai"] = self.init_zhipuai(config)
+        self.provider_map["azure_openai"] = self.init_azure_openai()
+        self.provider_map["openai"] = self.init_openai()
+        self.provider_map["anthropic"] = self.init_anthropic()
+        self.provider_map["minimax"] = self.init_minimax()
+        self.provider_map["spark"] = self.init_spark()
+        self.provider_map["zhipuai"] = self.init_zhipuai()
 
-        self.moderation_config = self.init_moderation_config(config)
+        self.moderation_config = self.init_moderation_config()
 
     @staticmethod
-    def init_azure_openai(app_config: Config) -> HostingProvider:
+    def init_azure_openai() -> HostingProvider:
         quota_unit = QuotaUnit.TIMES
-        if app_config.get("HOSTED_AZURE_OPENAI_ENABLED"):
+        if dify_config.HOSTED_AZURE_OPENAI_ENABLED:
             credentials = {
-                "openai_api_key": app_config.get("HOSTED_AZURE_OPENAI_API_KEY"),
-                "openai_api_base": app_config.get("HOSTED_AZURE_OPENAI_API_BASE"),
+                "openai_api_key": dify_config.HOSTED_AZURE_OPENAI_API_KEY,
+                "openai_api_base": dify_config.HOSTED_AZURE_OPENAI_API_BASE,
                 "base_model_name": "gpt-35-turbo",
             }
 
             quotas = []
-            hosted_quota_limit = int(app_config.get("HOSTED_AZURE_OPENAI_QUOTA_LIMIT", "1000"))
+            hosted_quota_limit = dify_config.HOSTED_AZURE_OPENAI_QUOTA_LIMIT
             trial_quota = TrialHostingQuota(
                 quota_limit=hosted_quota_limit,
                 restrict_models=[
@@ -121,31 +120,31 @@ class HostingConfiguration:
             quota_unit=quota_unit,
         )
 
-    def init_openai(self, app_config: Config) -> HostingProvider:
+    def init_openai(self) -> HostingProvider:
         quota_unit = QuotaUnit.CREDITS
         quotas = []
 
-        if app_config.get("HOSTED_OPENAI_TRIAL_ENABLED"):
-            hosted_quota_limit = int(app_config.get("HOSTED_OPENAI_QUOTA_LIMIT", "200"))
-            trial_models = self.parse_restrict_models_from_env(app_config, "HOSTED_OPENAI_TRIAL_MODELS")
+        if dify_config.HOSTED_OPENAI_TRIAL_ENABLED:
+            hosted_quota_limit = dify_config.HOSTED_OPENAI_QUOTA_LIMIT
+            trial_models = self.parse_restrict_models_from_env("HOSTED_OPENAI_TRIAL_MODELS")
             trial_quota = TrialHostingQuota(quota_limit=hosted_quota_limit, restrict_models=trial_models)
             quotas.append(trial_quota)
 
-        if app_config.get("HOSTED_OPENAI_PAID_ENABLED"):
-            paid_models = self.parse_restrict_models_from_env(app_config, "HOSTED_OPENAI_PAID_MODELS")
+        if dify_config.HOSTED_OPENAI_PAID_ENABLED:
+            paid_models = self.parse_restrict_models_from_env("HOSTED_OPENAI_PAID_MODELS")
             paid_quota = PaidHostingQuota(restrict_models=paid_models)
             quotas.append(paid_quota)
 
         if len(quotas) > 0:
             credentials = {
-                "openai_api_key": app_config.get("HOSTED_OPENAI_API_KEY"),
+                "openai_api_key": dify_config.HOSTED_OPENAI_API_KEY,
             }
 
-            if app_config.get("HOSTED_OPENAI_API_BASE"):
-                credentials["openai_api_base"] = app_config.get("HOSTED_OPENAI_API_BASE")
+            if dify_config.HOSTED_OPENAI_API_BASE:
+                credentials["openai_api_base"] = dify_config.HOSTED_OPENAI_API_BASE
 
-            if app_config.get("HOSTED_OPENAI_API_ORGANIZATION"):
-                credentials["openai_organization"] = app_config.get("HOSTED_OPENAI_API_ORGANIZATION")
+            if dify_config.HOSTED_OPENAI_API_ORGANIZATION:
+                credentials["openai_organization"] = dify_config.HOSTED_OPENAI_API_ORGANIZATION
 
             return HostingProvider(enabled=True, credentials=credentials, quota_unit=quota_unit, quotas=quotas)
 
@@ -155,26 +154,26 @@ class HostingConfiguration:
         )
 
     @staticmethod
-    def init_anthropic(app_config: Config) -> HostingProvider:
+    def init_anthropic() -> HostingProvider:
         quota_unit = QuotaUnit.TOKENS
         quotas = []
 
-        if app_config.get("HOSTED_ANTHROPIC_TRIAL_ENABLED"):
-            hosted_quota_limit = int(app_config.get("HOSTED_ANTHROPIC_QUOTA_LIMIT", "0"))
+        if dify_config.HOSTED_ANTHROPIC_TRIAL_ENABLED:
+            hosted_quota_limit = dify_config.HOSTED_ANTHROPIC_QUOTA_LIMIT
             trial_quota = TrialHostingQuota(quota_limit=hosted_quota_limit)
             quotas.append(trial_quota)
 
-        if app_config.get("HOSTED_ANTHROPIC_PAID_ENABLED"):
+        if dify_config.HOSTED_ANTHROPIC_PAID_ENABLED:
             paid_quota = PaidHostingQuota()
             quotas.append(paid_quota)
 
         if len(quotas) > 0:
             credentials = {
-                "anthropic_api_key": app_config.get("HOSTED_ANTHROPIC_API_KEY"),
+                "anthropic_api_key": dify_config.HOSTED_ANTHROPIC_API_KEY,
             }
 
-            if app_config.get("HOSTED_ANTHROPIC_API_BASE"):
-                credentials["anthropic_api_url"] = app_config.get("HOSTED_ANTHROPIC_API_BASE")
+            if dify_config.HOSTED_ANTHROPIC_API_BASE:
+                credentials["anthropic_api_url"] = dify_config.HOSTED_ANTHROPIC_API_BASE
 
             return HostingProvider(enabled=True, credentials=credentials, quota_unit=quota_unit, quotas=quotas)
 
@@ -184,9 +183,9 @@ class HostingConfiguration:
         )
 
     @staticmethod
-    def init_minimax(app_config: Config) -> HostingProvider:
+    def init_minimax() -> HostingProvider:
         quota_unit = QuotaUnit.TOKENS
-        if app_config.get("HOSTED_MINIMAX_ENABLED"):
+        if dify_config.HOSTED_MINIMAX_ENABLED:
             quotas = [FreeHostingQuota()]
 
             return HostingProvider(
@@ -202,9 +201,9 @@ class HostingConfiguration:
         )
 
     @staticmethod
-    def init_spark(app_config: Config) -> HostingProvider:
+    def init_spark() -> HostingProvider:
         quota_unit = QuotaUnit.TOKENS
-        if app_config.get("HOSTED_SPARK_ENABLED"):
+        if dify_config.HOSTED_SPARK_ENABLED:
             quotas = [FreeHostingQuota()]
 
             return HostingProvider(
@@ -220,9 +219,9 @@ class HostingConfiguration:
         )
 
     @staticmethod
-    def init_zhipuai(app_config: Config) -> HostingProvider:
+    def init_zhipuai() -> HostingProvider:
         quota_unit = QuotaUnit.TOKENS
-        if app_config.get("HOSTED_ZHIPUAI_ENABLED"):
+        if dify_config.HOSTED_ZHIPUAI_ENABLED:
             quotas = [FreeHostingQuota()]
 
             return HostingProvider(
@@ -238,17 +237,15 @@ class HostingConfiguration:
         )
 
     @staticmethod
-    def init_moderation_config(app_config: Config) -> HostedModerationConfig:
-        if app_config.get("HOSTED_MODERATION_ENABLED") and app_config.get("HOSTED_MODERATION_PROVIDERS"):
-            return HostedModerationConfig(
-                enabled=True, providers=app_config.get("HOSTED_MODERATION_PROVIDERS").split(",")
-            )
+    def init_moderation_config() -> HostedModerationConfig:
+        if dify_config.HOSTED_MODERATION_ENABLED and dify_config.HOSTED_MODERATION_PROVIDERS:
+            return HostedModerationConfig(enabled=True, providers=dify_config.HOSTED_MODERATION_PROVIDERS.split(","))
 
         return HostedModerationConfig(enabled=False)
 
     @staticmethod
-    def parse_restrict_models_from_env(app_config: Config, env_var: str) -> list[RestrictModel]:
-        models_str = app_config.get(env_var)
+    def parse_restrict_models_from_env(env_var: str) -> list[RestrictModel]:
+        models_str = dify_config.model_dump().get(env_var)
         models_list = models_str.split(",") if models_str else []
         return [
             RestrictModel(model=model_name.strip(), model_type=ModelType.LLM)
diff --git a/api/core/memory/token_buffer_memory.py b/api/core/memory/token_buffer_memory.py
index 189d94e290..d92c36a2df 100644
--- a/api/core/memory/token_buffer_memory.py
+++ b/api/core/memory/token_buffer_memory.py
@@ -2,6 +2,7 @@ from typing import Optional
 
 from core.app.app_config.features.file_upload.manager import FileUploadConfigManager
 from core.file import file_manager
+from core.file.models import FileType
 from core.model_manager import ModelInstance
 from core.model_runtime.entities import (
     AssistantPromptMessage,
@@ -98,8 +99,9 @@ class TokenBufferMemory:
                     prompt_message_contents: list[PromptMessageContent] = []
                     prompt_message_contents.append(TextPromptMessageContent(data=message.query))
                     for file_obj in file_objs:
-                        prompt_message = file_manager.to_prompt_message_content(file_obj)
-                        prompt_message_contents.append(prompt_message)
+                        if file_obj.type in {FileType.IMAGE, FileType.AUDIO}:
+                            prompt_message = file_manager.to_prompt_message_content(file_obj)
+                            prompt_message_contents.append(prompt_message)
 
                     prompt_messages.append(UserPromptMessage(content=prompt_message_contents))
             else:
diff --git a/api/core/model_runtime/docs/en_US/customizable_model_scale_out.md b/api/core/model_runtime/docs/en_US/customizable_model_scale_out.md
index f5b806ade6..f050919d81 100644
--- a/api/core/model_runtime/docs/en_US/customizable_model_scale_out.md
+++ b/api/core/model_runtime/docs/en_US/customizable_model_scale_out.md
@@ -218,7 +218,7 @@ For instance, Xinference supports `max_tokens`, `temperature`, and `top_p` param
 However, some vendors may support different parameters for different models. For example, the `OpenLLM` vendor supports `top_k`, but not all models provided by this vendor support `top_k`. Let's say model A supports `top_k` but model B does not. In such cases, we need to dynamically generate the model parameter schema, as illustrated below:
 
 ```python
-    def get_customizable_model_schema(self, model: str, credentials: dict) -> AIModelEntity | None:
+    def get_customizable_model_schema(self, model: str, credentials: dict) -> Optional[AIModelEntity]:
         """
             used to define customizable model schema
         """
diff --git a/api/core/model_runtime/docs/zh_Hans/customizable_model_scale_out.md b/api/core/model_runtime/docs/zh_Hans/customizable_model_scale_out.md
index 7b3a8edba3..240f65802b 100644
--- a/api/core/model_runtime/docs/zh_Hans/customizable_model_scale_out.md
+++ b/api/core/model_runtime/docs/zh_Hans/customizable_model_scale_out.md
@@ -205,7 +205,7 @@ provider_credential_schema:
   但是有的供应商根据不同的模型支持不同的参数，如供应商`OpenLLM`支持`top_k`，但是并不是这个供应商提供的所有模型都支持`top_k`，我们这里举例A模型支持`top_k`，B模型不支持`top_k`，那么我们需要在这里动态生成模型参数的Schema，如下所示：
   
     ```python
-    def get_customizable_model_schema(self, model: str, credentials: dict) -> AIModelEntity | None:
+    def get_customizable_model_schema(self, model: str, credentials: dict) -> Optional[AIModelEntity]:
         """
             used to define customizable model schema
         """
diff --git a/api/core/prompt/utils/prompt_template_parser.py b/api/core/prompt/utils/prompt_template_parser.py
index 8111559675..0fd08c5d3c 100644
--- a/api/core/prompt/utils/prompt_template_parser.py
+++ b/api/core/prompt/utils/prompt_template_parser.py
@@ -33,7 +33,7 @@ class PromptTemplateParser:
             key = match.group(1)
             value = inputs.get(key, match.group(0))  # return original matched string if key not found
 
-            if remove_template_variables:
+            if remove_template_variables and isinstance(value, str):
                 return PromptTemplateParser.remove_template_variables(value, self.with_variable_tmpl)
             return value
 
diff --git a/api/core/rag/datasource/vdb/qdrant/qdrant_vector.py b/api/core/rag/datasource/vdb/qdrant/qdrant_vector.py
index 69d2aa4f76..3811458e02 100644
--- a/api/core/rag/datasource/vdb/qdrant/qdrant_vector.py
+++ b/api/core/rag/datasource/vdb/qdrant/qdrant_vector.py
@@ -428,14 +428,13 @@ class QdrantVectorFactory(AbstractVectorFactory):
         if not dataset.index_struct_dict:
             dataset.index_struct = json.dumps(self.gen_index_struct_dict(VectorType.QDRANT, collection_name))
 
-        config = current_app.config
         return QdrantVector(
             collection_name=collection_name,
             group_id=dataset.id,
             config=QdrantConfig(
                 endpoint=dify_config.QDRANT_URL,
                 api_key=dify_config.QDRANT_API_KEY,
-                root_path=config.root_path,
+                root_path=current_app.config.root_path,
                 timeout=dify_config.QDRANT_CLIENT_TIMEOUT,
                 grpc_port=dify_config.QDRANT_GRPC_PORT,
                 prefer_grpc=dify_config.QDRANT_GRPC_ENABLED,
diff --git a/api/core/rag/extractor/word_extractor.py b/api/core/rag/extractor/word_extractor.py
index 2b6e048652..a5375991b4 100644
--- a/api/core/rag/extractor/word_extractor.py
+++ b/api/core/rag/extractor/word_extractor.py
@@ -18,6 +18,7 @@ from core.rag.extractor.extractor_base import BaseExtractor
 from core.rag.models.document import Document
 from extensions.ext_database import db
 from extensions.ext_storage import storage
+from models.enums import CreatedByRole
 from models.model import UploadFile
 
 logger = logging.getLogger(__name__)
@@ -109,9 +110,10 @@ class WordExtractor(BaseExtractor):
                     key=file_key,
                     name=file_key,
                     size=0,
-                    extension=image_ext,
-                    mime_type=mime_type,
+                    extension=str(image_ext),
+                    mime_type=mime_type or "",
                     created_by=self.user_id,
+                    created_by_role=CreatedByRole.ACCOUNT,
                     created_at=datetime.datetime.now(datetime.timezone.utc).replace(tzinfo=None),
                     used=True,
                     used_by=self.user_id,
diff --git a/api/core/tools/utils/workflow_configuration_sync.py b/api/core/tools/utils/workflow_configuration_sync.py
index bc9bc89161..5cdf85e583 100644
--- a/api/core/tools/utils/workflow_configuration_sync.py
+++ b/api/core/tools/utils/workflow_configuration_sync.py
@@ -22,7 +22,7 @@ class WorkflowToolConfigurationUtils:
         if not start_node:
             return []
 
-        return [VariableEntity(**variable) for variable in start_node.get("data", {}).get("variables", [])]
+        return [VariableEntity.model_validate(variable) for variable in start_node.get("data", {}).get("variables", [])]
 
     @classmethod
     def check_is_synced(
diff --git a/api/core/workflow/entities/variable_pool.py b/api/core/workflow/entities/variable_pool.py
index 5f932c0a8e..f8968990d4 100644
--- a/api/core/workflow/entities/variable_pool.py
+++ b/api/core/workflow/entities/variable_pool.py
@@ -4,7 +4,6 @@ from collections.abc import Mapping, Sequence
 from typing import Any, Union
 
 from pydantic import BaseModel, Field
-from typing_extensions import deprecated
 
 from core.file import File, FileAttribute, file_manager
 from core.variables import Segment, SegmentGroup, Variable
@@ -96,9 +95,6 @@ class VariablePool(BaseModel):
         if len(selector) < 2:
             raise ValueError("Invalid selector")
 
-        if value is None:
-            return
-
         if isinstance(value, Segment):
             v = value
         else:
@@ -136,26 +132,6 @@ class VariablePool(BaseModel):
 
         return value
 
-    @deprecated("This method is deprecated, use `get` instead.")
-    def get_any(self, selector: Sequence[str], /) -> Any | None:
-        """
-        Retrieves the value from the variable pool based on the given selector.
-
-        Args:
-            selector (Sequence[str]): The selector used to identify the variable.
-
-        Returns:
-            Any: The value associated with the given selector.
-
-        Raises:
-            ValueError: If the selector is invalid.
-        """
-        if len(selector) < 2:
-            raise ValueError("Invalid selector")
-        hash_key = hash(tuple(selector[1:]))
-        value = self.variable_dictionary[selector[0]].get(hash_key)
-        return value.to_object() if value else None
-
     def remove(self, selector: Sequence[str], /):
         """
         Remove variables from the variable pool based on the given selector.
diff --git a/api/core/workflow/nodes/code/code_node.py b/api/core/workflow/nodes/code/code_node.py
index dd533ffc4c..9d7d9027c3 100644
--- a/api/core/workflow/nodes/code/code_node.py
+++ b/api/core/workflow/nodes/code/code_node.py
@@ -41,10 +41,15 @@ class CodeNode(BaseNode[CodeNodeData]):
         # Get variables
         variables = {}
         for variable_selector in self.node_data.variables:
-            variable = variable_selector.variable
-            value = self.graph_runtime_state.variable_pool.get_any(variable_selector.value_selector)
-
-            variables[variable] = value
+            variable_name = variable_selector.variable
+            variable = self.graph_runtime_state.variable_pool.get(variable_selector.value_selector)
+            if variable is None:
+                return NodeRunResult(
+                    status=WorkflowNodeExecutionStatus.FAILED,
+                    inputs=variables,
+                    error=f"Variable `{variable_selector.value_selector}` not found",
+                )
+            variables[variable_name] = variable.to_object()
         # Run code
         try:
             result = CodeExecutor.execute_workflow_code_template(
diff --git a/api/core/workflow/nodes/http_request/entities.py b/api/core/workflow/nodes/http_request/entities.py
index 816ece9577..dec76a277e 100644
--- a/api/core/workflow/nodes/http_request/entities.py
+++ b/api/core/workflow/nodes/http_request/entities.py
@@ -1,5 +1,5 @@
 from collections.abc import Sequence
-from typing import Literal, Optional
+from typing import Any, Literal, Optional
 
 import httpx
 from pydantic import BaseModel, Field, ValidationInfo, field_validator
@@ -52,6 +52,16 @@ class HttpRequestNodeBody(BaseModel):
     type: Literal["none", "form-data", "x-www-form-urlencoded", "raw-text", "json", "binary"]
     data: Sequence[BodyData] = Field(default_factory=list)
 
+    @field_validator("data", mode="before")
+    @classmethod
+    def check_data(cls, v: Any):
+        """For compatibility, if body is not set, return empty list."""
+        if not v:
+            return []
+        if isinstance(v, str):
+            return [BodyData(key="", type="text", value=v)]
+        return v
+
 
 class HttpRequestNodeTimeout(BaseModel):
     connect: int = dify_config.HTTP_REQUEST_MAX_CONNECT_TIMEOUT
diff --git a/api/core/workflow/nodes/http_request/executor.py b/api/core/workflow/nodes/http_request/executor.py
index 71bb0ac86a..0270d7e0fd 100644
--- a/api/core/workflow/nodes/http_request/executor.py
+++ b/api/core/workflow/nodes/http_request/executor.py
@@ -1,5 +1,5 @@
 import json
-from collections.abc import Mapping, Sequence
+from collections.abc import Mapping
 from copy import deepcopy
 from random import randint
 from typing import Any, Literal
@@ -60,7 +60,7 @@ class Executor:
         self.method = node_data.method
         self.auth = node_data.authorization
         self.timeout = timeout
-        self.params = None
+        self.params = {}
         self.headers = {}
         self.content = None
         self.files = None
@@ -108,8 +108,10 @@ class Executor:
                 case "raw-text":
                     self.content = self.variable_pool.convert_template(data[0].value).text
                 case "json":
-                    json_object = json.loads(data[0].value)
-                    self.json = self._parse_object_contains_variables(json_object)
+                    json_string = self.variable_pool.convert_template(data[0].value).text
+                    json_object = json.loads(json_string)
+                    self.json = json_object
+                    # self.json = self._parse_object_contains_variables(json_object)
                 case "binary":
                     file_selector = data[0].file
                     file_variable = self.variable_pool.get_file(file_selector)
@@ -274,14 +276,6 @@ class Executor:
 
         return raw
 
-    def _parse_object_contains_variables(self, obj: str | dict | list, /) -> Mapping[str, Any] | Sequence[Any] | str:
-        if isinstance(obj, dict):
-            return {k: self._parse_object_contains_variables(v) for k, v in obj.items()}
-        elif isinstance(obj, list):
-            return [self._parse_object_contains_variables(v) for v in obj]
-        elif isinstance(obj, str):
-            return self.variable_pool.convert_template(obj).text
-
 
 def _plain_text_to_dict(text: str, /) -> dict[str, str]:
     """
diff --git a/api/core/workflow/nodes/iteration/iteration_node.py b/api/core/workflow/nodes/iteration/iteration_node.py
index b28ae0a85c..af79da9215 100644
--- a/api/core/workflow/nodes/iteration/iteration_node.py
+++ b/api/core/workflow/nodes/iteration/iteration_node.py
@@ -5,6 +5,7 @@ from typing import Any, cast
 
 from configs import dify_config
 from core.model_runtime.utils.encoders import jsonable_encoder
+from core.variables import IntegerSegment
 from core.workflow.entities.node_entities import NodeRunMetadataKey, NodeRunResult
 from core.workflow.graph_engine.entities.event import (
     BaseGraphEvent,
@@ -46,6 +47,15 @@ class IterationNode(BaseNode[IterationNodeData]):
         if not iterator_list_segment:
             raise ValueError(f"Iterator variable {self.node_data.iterator_selector} not found")
 
+        if len(iterator_list_segment.value) == 0:
+            yield RunCompletedEvent(
+                run_result=NodeRunResult(
+                    status=WorkflowNodeExecutionStatus.SUCCEEDED,
+                    outputs={"output": []},
+                )
+            )
+            return
+
         iterator_list_value = iterator_list_segment.to_object()
 
         if not isinstance(iterator_list_value, list):
@@ -138,9 +148,16 @@ class IterationNode(BaseNode[IterationNodeData]):
 
                             if NodeRunMetadataKey.ITERATION_ID not in metadata:
                                 metadata[NodeRunMetadataKey.ITERATION_ID] = self.node_id
-                                metadata[NodeRunMetadataKey.ITERATION_INDEX] = variable_pool.get_any(
-                                    [self.node_id, "index"]
-                                )
+                                index_variable = variable_pool.get([self.node_id, "index"])
+                                if not isinstance(index_variable, IntegerSegment):
+                                    yield RunCompletedEvent(
+                                        run_result=NodeRunResult(
+                                            status=WorkflowNodeExecutionStatus.FAILED,
+                                            error=f"Invalid index variable type: {type(index_variable)}",
+                                        )
+                                    )
+                                    return
+                                metadata[NodeRunMetadataKey.ITERATION_INDEX] = index_variable.value
                                 event.route_node_state.node_run_result.metadata = metadata
 
                         yield event
@@ -172,7 +189,16 @@ class IterationNode(BaseNode[IterationNodeData]):
                         yield event
 
                 # append to iteration output variable list
-                current_iteration_output = variable_pool.get_any(self.node_data.output_selector)
+                current_iteration_output_variable = variable_pool.get(self.node_data.output_selector)
+                if current_iteration_output_variable is None:
+                    yield RunCompletedEvent(
+                        run_result=NodeRunResult(
+                            status=WorkflowNodeExecutionStatus.FAILED,
+                            error=f"Iteration output variable {self.node_data.output_selector} not found",
+                        )
+                    )
+                    return
+                current_iteration_output = current_iteration_output_variable.to_object()
                 outputs.append(current_iteration_output)
 
                 # remove all nodes outputs from variable pool
@@ -180,11 +206,11 @@ class IterationNode(BaseNode[IterationNodeData]):
                     variable_pool.remove([node_id])
 
                 # move to next iteration
-                current_index = variable_pool.get([self.node_id, "index"])
-                if current_index is None:
+                current_index_variable = variable_pool.get([self.node_id, "index"])
+                if not isinstance(current_index_variable, IntegerSegment):
                     raise ValueError(f"iteration {self.node_id} current index not found")
 
-                next_index = int(current_index.to_object()) + 1
+                next_index = current_index_variable.value + 1
                 variable_pool.add([self.node_id, "index"], next_index)
 
                 if next_index < len(iterator_list_value):
@@ -196,9 +222,7 @@ class IterationNode(BaseNode[IterationNodeData]):
                     iteration_node_type=self.node_type,
                     iteration_node_data=self.node_data,
                     index=next_index,
-                    pre_iteration_output=jsonable_encoder(current_iteration_output)
-                    if current_iteration_output
-                    else None,
+                    pre_iteration_output=jsonable_encoder(current_iteration_output),
                 )
 
             yield IterationRunSucceededEvent(
diff --git a/api/core/workflow/nodes/knowledge_retrieval/knowledge_retrieval_node.py b/api/core/workflow/nodes/knowledge_retrieval/knowledge_retrieval_node.py
index b286f34d7f..2a5795a3ed 100644
--- a/api/core/workflow/nodes/knowledge_retrieval/knowledge_retrieval_node.py
+++ b/api/core/workflow/nodes/knowledge_retrieval/knowledge_retrieval_node.py
@@ -14,6 +14,7 @@ from core.model_runtime.entities.model_entities import ModelFeature, ModelType
 from core.model_runtime.model_providers.__base.large_language_model import LargeLanguageModel
 from core.rag.retrieval.dataset_retrieval import DatasetRetrieval
 from core.rag.retrieval.retrieval_methods import RetrievalMethod
+from core.variables import StringSegment
 from core.workflow.entities.node_entities import NodeRunResult
 from core.workflow.nodes.base import BaseNode
 from core.workflow.nodes.enums import NodeType
@@ -39,8 +40,14 @@ class KnowledgeRetrievalNode(BaseNode[KnowledgeRetrievalNodeData]):
 
     def _run(self) -> NodeRunResult:
         # extract variables
-        variable = self.graph_runtime_state.variable_pool.get_any(self.node_data.query_variable_selector)
-        query = variable
+        variable = self.graph_runtime_state.variable_pool.get(self.node_data.query_variable_selector)
+        if not isinstance(variable, StringSegment):
+            return NodeRunResult(
+                status=WorkflowNodeExecutionStatus.FAILED,
+                inputs={},
+                error="Query variable is not string type.",
+            )
+        query = variable.value
         variables = {"query": query}
         if not query:
             return NodeRunResult(
diff --git a/api/core/workflow/nodes/llm/entities.py b/api/core/workflow/nodes/llm/entities.py
index b4de312461..a25d563fe0 100644
--- a/api/core/workflow/nodes/llm/entities.py
+++ b/api/core/workflow/nodes/llm/entities.py
@@ -1,7 +1,7 @@
 from collections.abc import Sequence
 from typing import Any, Optional
 
-from pydantic import BaseModel, Field
+from pydantic import BaseModel, Field, field_validator
 
 from core.model_runtime.entities import ImagePromptMessageContent
 from core.prompt.entities.advanced_prompt_entities import ChatModelMessage, CompletionModelPromptTemplate, MemoryConfig
@@ -30,6 +30,13 @@ class VisionConfig(BaseModel):
     enabled: bool = False
     configs: VisionConfigOptions = Field(default_factory=VisionConfigOptions)
 
+    @field_validator("configs", mode="before")
+    @classmethod
+    def convert_none_configs(cls, v: Any):
+        if v is None:
+            return VisionConfigOptions()
+        return v
+
 
 class PromptConfig(BaseModel):
     jinja2_variables: Optional[list[VariableSelector]] = None
diff --git a/api/core/workflow/nodes/llm/node.py b/api/core/workflow/nodes/llm/node.py
index 24e479153e..94aa8c5eab 100644
--- a/api/core/workflow/nodes/llm/node.py
+++ b/api/core/workflow/nodes/llm/node.py
@@ -22,7 +22,15 @@ from core.model_runtime.utils.encoders import jsonable_encoder
 from core.prompt.advanced_prompt_transform import AdvancedPromptTransform
 from core.prompt.entities.advanced_prompt_entities import CompletionModelPromptTemplate, MemoryConfig
 from core.prompt.utils.prompt_message_util import PromptMessageUtil
-from core.variables import ArrayAnySegment, ArrayFileSegment, FileSegment
+from core.variables import (
+    ArrayAnySegment,
+    ArrayFileSegment,
+    ArraySegment,
+    FileSegment,
+    NoneSegment,
+    ObjectSegment,
+    StringSegment,
+)
 from core.workflow.constants import SYSTEM_VARIABLE_NODE_ID
 from core.workflow.entities.node_entities import NodeRunMetadataKey, NodeRunResult
 from core.workflow.enums import SystemVariableKey
@@ -263,50 +271,44 @@ class LLMNode(BaseNode[LLMNodeData]):
             return variables
 
         for variable_selector in node_data.prompt_config.jinja2_variables or []:
-            variable = variable_selector.variable
-            value = self.graph_runtime_state.variable_pool.get_any(variable_selector.value_selector)
+            variable_name = variable_selector.variable
+            variable = self.graph_runtime_state.variable_pool.get(variable_selector.value_selector)
+            if variable is None:
+                raise ValueError(f"Variable {variable_selector.variable} not found")
 
-            def parse_dict(d: dict) -> str:
+            def parse_dict(input_dict: Mapping[str, Any]) -> str:
                 """
                 Parse dict into string
                 """
                 # check if it's a context structure
-                if "metadata" in d and "_source" in d["metadata"] and "content" in d:
-                    return d["content"]
+                if "metadata" in input_dict and "_source" in input_dict["metadata"] and "content" in input_dict:
+                    return input_dict["content"]
 
                 # else, parse the dict
                 try:
-                    return json.dumps(d, ensure_ascii=False)
+                    return json.dumps(input_dict, ensure_ascii=False)
                 except Exception:
-                    return str(d)
+                    return str(input_dict)
 
-            if isinstance(value, str):
-                value = value
-            elif isinstance(value, list):
+            if isinstance(variable, ArraySegment):
                 result = ""
-                for item in value:
+                for item in variable.value:
                     if isinstance(item, dict):
                         result += parse_dict(item)
-                    elif isinstance(item, str):
-                        result += item
-                    elif isinstance(item, int | float):
-                        result += str(item)
                     else:
                         result += str(item)
                     result += "\n"
                 value = result.strip()
-            elif isinstance(value, dict):
-                value = parse_dict(value)
-            elif isinstance(value, int | float):
-                value = str(value)
+            elif isinstance(variable, ObjectSegment):
+                value = parse_dict(variable.value)
             else:
-                value = str(value)
+                value = variable.text
 
-            variables[variable] = value
+            variables[variable_name] = value
 
         return variables
 
-    def _fetch_inputs(self, node_data: LLMNodeData) -> dict[str, str]:
+    def _fetch_inputs(self, node_data: LLMNodeData) -> dict[str, Any]:
         inputs = {}
         prompt_template = node_data.prompt_template
 
@@ -320,11 +322,12 @@ class LLMNode(BaseNode[LLMNodeData]):
             variable_selectors = variable_template_parser.extract_variable_selectors()
 
         for variable_selector in variable_selectors:
-            variable_value = self.graph_runtime_state.variable_pool.get_any(variable_selector.value_selector)
-            if variable_value is None:
+            variable = self.graph_runtime_state.variable_pool.get(variable_selector.value_selector)
+            if variable is None:
                 raise ValueError(f"Variable {variable_selector.variable} not found")
-
-            inputs[variable_selector.variable] = variable_value
+            if isinstance(variable, NoneSegment):
+                continue
+            inputs[variable_selector.variable] = variable.to_object()
 
         memory = node_data.memory
         if memory and memory.query_prompt_template:
@@ -332,11 +335,12 @@ class LLMNode(BaseNode[LLMNodeData]):
                 template=memory.query_prompt_template
             ).extract_variable_selectors()
             for variable_selector in query_variable_selectors:
-                variable_value = self.graph_runtime_state.variable_pool.get_any(variable_selector.value_selector)
-                if variable_value is None:
+                variable = self.graph_runtime_state.variable_pool.get(variable_selector.value_selector)
+                if variable is None:
                     raise ValueError(f"Variable {variable_selector.variable} not found")
-
-                inputs[variable_selector.variable] = variable_value
+                if isinstance(variable, NoneSegment):
+                    continue
+                inputs[variable_selector.variable] = variable.to_object()
 
         return inputs
 
@@ -361,14 +365,14 @@ class LLMNode(BaseNode[LLMNodeData]):
         if not node_data.context.variable_selector:
             return
 
-        context_value = self.graph_runtime_state.variable_pool.get_any(node_data.context.variable_selector)
-        if context_value:
-            if isinstance(context_value, str):
-                yield RunRetrieverResourceEvent(retriever_resources=[], context=context_value)
-            elif isinstance(context_value, list):
+        context_value_variable = self.graph_runtime_state.variable_pool.get(node_data.context.variable_selector)
+        if context_value_variable:
+            if isinstance(context_value_variable, StringSegment):
+                yield RunRetrieverResourceEvent(retriever_resources=[], context=context_value_variable.value)
+            elif isinstance(context_value_variable, ArraySegment):
                 context_str = ""
                 original_retriever_resource = []
-                for item in context_value:
+                for item in context_value_variable.value:
                     if isinstance(item, str):
                         context_str += item + "\n"
                     else:
@@ -482,11 +486,12 @@ class LLMNode(BaseNode[LLMNodeData]):
             return None
 
         # get conversation id
-        conversation_id = self.graph_runtime_state.variable_pool.get_any(
+        conversation_id_variable = self.graph_runtime_state.variable_pool.get(
             ["sys", SystemVariableKey.CONVERSATION_ID.value]
         )
-        if conversation_id is None:
+        if not isinstance(conversation_id_variable, StringSegment):
             return None
+        conversation_id = conversation_id_variable.value
 
         # get conversation
         conversation = (
diff --git a/api/core/workflow/nodes/template_transform/template_transform_node.py b/api/core/workflow/nodes/template_transform/template_transform_node.py
index 857a693c5b..0ee66784c5 100644
--- a/api/core/workflow/nodes/template_transform/template_transform_node.py
+++ b/api/core/workflow/nodes/template_transform/template_transform_node.py
@@ -33,8 +33,13 @@ class TemplateTransformNode(BaseNode[TemplateTransformNodeData]):
         variables = {}
         for variable_selector in self.node_data.variables:
             variable_name = variable_selector.variable
-            value = self.graph_runtime_state.variable_pool.get_any(variable_selector.value_selector)
-            variables[variable_name] = value
+            value = self.graph_runtime_state.variable_pool.get(variable_selector.value_selector)
+            if value is None:
+                return NodeRunResult(
+                    status=WorkflowNodeExecutionStatus.FAILED,
+                    error=f"Variable {variable_name} not found in variable pool",
+                )
+            variables[variable_name] = value.to_object()
         # Run code
         try:
             result = CodeExecutor.execute_workflow_code_template(
@@ -56,7 +61,7 @@ class TemplateTransformNode(BaseNode[TemplateTransformNodeData]):
 
     @classmethod
     def _extract_variable_selector_to_variable_mapping(
-        cls, graph_config: Mapping[str, Any], node_id: str, node_data: TemplateTransformNodeData
+        cls, *, graph_config: Mapping[str, Any], node_id: str, node_data: TemplateTransformNodeData
     ) -> Mapping[str, Sequence[str]]:
         """
         Extract variable selector to variable mapping
diff --git a/api/core/workflow/nodes/variable_aggregator/variable_aggregator_node.py b/api/core/workflow/nodes/variable_aggregator/variable_aggregator_node.py
index 05477e2a90..031a7b8309 100644
--- a/api/core/workflow/nodes/variable_aggregator/variable_aggregator_node.py
+++ b/api/core/workflow/nodes/variable_aggregator/variable_aggregator_node.py
@@ -19,27 +19,27 @@ class VariableAggregatorNode(BaseNode[VariableAssignerNodeData]):
 
         if not self.node_data.advanced_settings or not self.node_data.advanced_settings.group_enabled:
             for selector in self.node_data.variables:
-                variable = self.graph_runtime_state.variable_pool.get_any(selector)
+                variable = self.graph_runtime_state.variable_pool.get(selector)
                 if variable is not None:
-                    outputs = {"output": variable}
+                    outputs = {"output": variable.to_object()}
 
-                    inputs = {".".join(selector[1:]): variable}
+                    inputs = {".".join(selector[1:]): variable.to_object()}
                     break
         else:
             for group in self.node_data.advanced_settings.groups:
                 for selector in group.variables:
-                    variable = self.graph_runtime_state.variable_pool.get_any(selector)
+                    variable = self.graph_runtime_state.variable_pool.get(selector)
 
                     if variable is not None:
-                        outputs[group.group_name] = {"output": variable}
-                        inputs[".".join(selector[1:])] = variable
+                        outputs[group.group_name] = {"output": variable.to_object()}
+                        inputs[".".join(selector[1:])] = variable.to_object()
                         break
 
         return NodeRunResult(status=WorkflowNodeExecutionStatus.SUCCEEDED, outputs=outputs, inputs=inputs)
 
     @classmethod
     def _extract_variable_selector_to_variable_mapping(
-        cls, graph_config: Mapping[str, Any], node_id: str, node_data: VariableAssignerNodeData
+        cls, *, graph_config: Mapping[str, Any], node_id: str, node_data: VariableAssignerNodeData
     ) -> Mapping[str, Sequence[str]]:
         """
         Extract variable selector to variable mapping
diff --git a/api/extensions/ext_celery.py b/api/extensions/ext_celery.py
index 0ff9f90847..b9b019373d 100644
--- a/api/extensions/ext_celery.py
+++ b/api/extensions/ext_celery.py
@@ -3,6 +3,8 @@ from datetime import timedelta
 from celery import Celery, Task
 from flask import Flask
 
+from configs import dify_config
+
 
 def init_app(app: Flask) -> Celery:
     class FlaskTask(Task):
@@ -12,19 +14,19 @@ def init_app(app: Flask) -> Celery:
 
     broker_transport_options = {}
 
-    if app.config.get("CELERY_USE_SENTINEL"):
+    if dify_config.CELERY_USE_SENTINEL:
         broker_transport_options = {
-            "master_name": app.config.get("CELERY_SENTINEL_MASTER_NAME"),
+            "master_name": dify_config.CELERY_SENTINEL_MASTER_NAME,
             "sentinel_kwargs": {
-                "socket_timeout": app.config.get("CELERY_SENTINEL_SOCKET_TIMEOUT", 0.1),
+                "socket_timeout": dify_config.CELERY_SENTINEL_SOCKET_TIMEOUT,
             },
         }
 
     celery_app = Celery(
         app.name,
         task_cls=FlaskTask,
-        broker=app.config.get("CELERY_BROKER_URL"),
-        backend=app.config.get("CELERY_BACKEND"),
+        broker=dify_config.CELERY_BROKER_URL,
+        backend=dify_config.CELERY_BACKEND,
         task_ignore_result=True,
     )
 
@@ -37,12 +39,12 @@ def init_app(app: Flask) -> Celery:
     }
 
     celery_app.conf.update(
-        result_backend=app.config.get("CELERY_RESULT_BACKEND"),
+        result_backend=dify_config.CELERY_RESULT_BACKEND,
         broker_transport_options=broker_transport_options,
         broker_connection_retry_on_startup=True,
     )
 
-    if app.config.get("BROKER_USE_SSL"):
+    if dify_config.BROKER_USE_SSL:
         celery_app.conf.update(
             broker_use_ssl=ssl_options,  # Add the SSL options to the broker configuration
         )
@@ -54,7 +56,7 @@ def init_app(app: Flask) -> Celery:
         "schedule.clean_embedding_cache_task",
         "schedule.clean_unused_datasets_task",
     ]
-    day = app.config.get("CELERY_BEAT_SCHEDULER_TIME")
+    day = dify_config.CELERY_BEAT_SCHEDULER_TIME
     beat_schedule = {
         "clean_embedding_cache_task": {
             "task": "schedule.clean_embedding_cache_task.clean_embedding_cache_task",
diff --git a/api/extensions/ext_compress.py b/api/extensions/ext_compress.py
index 38e67749fc..a6de28597b 100644
--- a/api/extensions/ext_compress.py
+++ b/api/extensions/ext_compress.py
@@ -1,8 +1,10 @@
 from flask import Flask
 
+from configs import dify_config
+
 
 def init_app(app: Flask):
-    if app.config.get("API_COMPRESSION_ENABLED"):
+    if dify_config.API_COMPRESSION_ENABLED:
         from flask_compress import Compress
 
         app.config["COMPRESS_MIMETYPES"] = [
diff --git a/api/extensions/ext_logging.py b/api/extensions/ext_logging.py
new file mode 100644
index 0000000000..9e1a241b67
--- /dev/null
+++ b/api/extensions/ext_logging.py
@@ -0,0 +1,45 @@
+import logging
+import os
+import sys
+from logging.handlers import RotatingFileHandler
+
+from flask import Flask
+
+from configs import dify_config
+
+
+def init_app(app: Flask):
+    log_handlers = None
+    log_file = dify_config.LOG_FILE
+    if log_file:
+        log_dir = os.path.dirname(log_file)
+        os.makedirs(log_dir, exist_ok=True)
+        log_handlers = [
+            RotatingFileHandler(
+                filename=log_file,
+                maxBytes=1024 * 1024 * 1024,
+                backupCount=5,
+            ),
+            logging.StreamHandler(sys.stdout),
+        ]
+
+    logging.basicConfig(
+        level=dify_config.LOG_LEVEL,
+        format=dify_config.LOG_FORMAT,
+        datefmt=dify_config.LOG_DATEFORMAT,
+        handlers=log_handlers,
+        force=True,
+    )
+    log_tz = dify_config.LOG_TZ
+    if log_tz:
+        from datetime import datetime
+
+        import pytz
+
+        timezone = pytz.timezone(log_tz)
+
+        def time_converter(seconds):
+            return datetime.utcfromtimestamp(seconds).astimezone(timezone).timetuple()
+
+        for handler in logging.root.handlers:
+            handler.formatter.converter = time_converter
diff --git a/api/extensions/ext_mail.py b/api/extensions/ext_mail.py
index b435294abc..5c5b331d8a 100644
--- a/api/extensions/ext_mail.py
+++ b/api/extensions/ext_mail.py
@@ -4,6 +4,8 @@ from typing import Optional
 import resend
 from flask import Flask
 
+from configs import dify_config
+
 
 class Mail:
     def __init__(self):
@@ -14,41 +16,44 @@ class Mail:
         return self._client is not None
 
     def init_app(self, app: Flask):
-        if app.config.get("MAIL_TYPE"):
-            if app.config.get("MAIL_DEFAULT_SEND_FROM"):
-                self._default_send_from = app.config.get("MAIL_DEFAULT_SEND_FROM")
+        mail_type = dify_config.MAIL_TYPE
+        if not mail_type:
+            logging.warning("MAIL_TYPE is not set")
+            return
 
-            if app.config.get("MAIL_TYPE") == "resend":
-                api_key = app.config.get("RESEND_API_KEY")
+        if dify_config.MAIL_DEFAULT_SEND_FROM:
+            self._default_send_from = dify_config.MAIL_DEFAULT_SEND_FROM
+
+        match mail_type:
+            case "resend":
+                api_key = dify_config.RESEND_API_KEY
                 if not api_key:
                     raise ValueError("RESEND_API_KEY is not set")
 
-                api_url = app.config.get("RESEND_API_URL")
+                api_url = dify_config.RESEND_API_URL
                 if api_url:
                     resend.api_url = api_url
 
                 resend.api_key = api_key
                 self._client = resend.Emails
-            elif app.config.get("MAIL_TYPE") == "smtp":
+            case "smtp":
                 from libs.smtp import SMTPClient
 
-                if not app.config.get("SMTP_SERVER") or not app.config.get("SMTP_PORT"):
+                if not dify_config.SMTP_SERVER or not dify_config.SMTP_PORT:
                     raise ValueError("SMTP_SERVER and SMTP_PORT are required for smtp mail type")
-                if not app.config.get("SMTP_USE_TLS") and app.config.get("SMTP_OPPORTUNISTIC_TLS"):
+                if not dify_config.SMTP_USE_TLS and dify_config.SMTP_OPPORTUNISTIC_TLS:
                     raise ValueError("SMTP_OPPORTUNISTIC_TLS is not supported without enabling SMTP_USE_TLS")
                 self._client = SMTPClient(
-                    server=app.config.get("SMTP_SERVER"),
-                    port=app.config.get("SMTP_PORT"),
-                    username=app.config.get("SMTP_USERNAME"),
-                    password=app.config.get("SMTP_PASSWORD"),
-                    _from=app.config.get("MAIL_DEFAULT_SEND_FROM"),
-                    use_tls=app.config.get("SMTP_USE_TLS"),
-                    opportunistic_tls=app.config.get("SMTP_OPPORTUNISTIC_TLS"),
+                    server=dify_config.SMTP_SERVER,
+                    port=dify_config.SMTP_PORT,
+                    username=dify_config.SMTP_USERNAME,
+                    password=dify_config.SMTP_PASSWORD,
+                    _from=dify_config.MAIL_DEFAULT_SEND_FROM,
+                    use_tls=dify_config.SMTP_USE_TLS,
+                    opportunistic_tls=dify_config.SMTP_OPPORTUNISTIC_TLS,
                 )
-            else:
-                raise ValueError("Unsupported mail type {}".format(app.config.get("MAIL_TYPE")))
-        else:
-            logging.warning("MAIL_TYPE is not set")
+            case _:
+                raise ValueError("Unsupported mail type {}".format(mail_type))
 
     def send(self, to: str, subject: str, html: str, from_: Optional[str] = None):
         if not self._client:
diff --git a/api/extensions/ext_redis.py b/api/extensions/ext_redis.py
index 054769e7ff..e1f8409f21 100644
--- a/api/extensions/ext_redis.py
+++ b/api/extensions/ext_redis.py
@@ -2,6 +2,8 @@ import redis
 from redis.connection import Connection, SSLConnection
 from redis.sentinel import Sentinel
 
+from configs import dify_config
+
 
 class RedisClientWrapper(redis.Redis):
     """
@@ -43,37 +45,37 @@ redis_client = RedisClientWrapper()
 def init_app(app):
     global redis_client
     connection_class = Connection
-    if app.config.get("REDIS_USE_SSL"):
+    if dify_config.REDIS_USE_SSL:
         connection_class = SSLConnection
 
     redis_params = {
-        "username": app.config.get("REDIS_USERNAME"),
-        "password": app.config.get("REDIS_PASSWORD"),
-        "db": app.config.get("REDIS_DB"),
+        "username": dify_config.REDIS_USERNAME,
+        "password": dify_config.REDIS_PASSWORD,
+        "db": dify_config.REDIS_DB,
         "encoding": "utf-8",
         "encoding_errors": "strict",
         "decode_responses": False,
     }
 
-    if app.config.get("REDIS_USE_SENTINEL"):
+    if dify_config.REDIS_USE_SENTINEL:
         sentinel_hosts = [
-            (node.split(":")[0], int(node.split(":")[1])) for node in app.config.get("REDIS_SENTINELS").split(",")
+            (node.split(":")[0], int(node.split(":")[1])) for node in dify_config.REDIS_SENTINELS.split(",")
         ]
         sentinel = Sentinel(
             sentinel_hosts,
             sentinel_kwargs={
-                "socket_timeout": app.config.get("REDIS_SENTINEL_SOCKET_TIMEOUT", 0.1),
-                "username": app.config.get("REDIS_SENTINEL_USERNAME"),
-                "password": app.config.get("REDIS_SENTINEL_PASSWORD"),
+                "socket_timeout": dify_config.REDIS_SENTINEL_SOCKET_TIMEOUT,
+                "username": dify_config.REDIS_SENTINEL_USERNAME,
+                "password": dify_config.REDIS_SENTINEL_PASSWORD,
             },
         )
-        master = sentinel.master_for(app.config.get("REDIS_SENTINEL_SERVICE_NAME"), **redis_params)
+        master = sentinel.master_for(dify_config.REDIS_SENTINEL_SERVICE_NAME, **redis_params)
         redis_client.initialize(master)
     else:
         redis_params.update(
             {
-                "host": app.config.get("REDIS_HOST"),
-                "port": app.config.get("REDIS_PORT"),
+                "host": dify_config.REDIS_HOST,
+                "port": dify_config.REDIS_PORT,
                 "connection_class": connection_class,
             }
         )
diff --git a/api/extensions/ext_sentry.py b/api/extensions/ext_sentry.py
index e255e7eb35..11f1dd93c6 100644
--- a/api/extensions/ext_sentry.py
+++ b/api/extensions/ext_sentry.py
@@ -5,6 +5,7 @@ from sentry_sdk.integrations.celery import CeleryIntegration
 from sentry_sdk.integrations.flask import FlaskIntegration
 from werkzeug.exceptions import HTTPException
 
+from configs import dify_config
 from core.model_runtime.errors.invoke import InvokeRateLimitError
 
 
@@ -18,9 +19,9 @@ def before_send(event, hint):
 
 
 def init_app(app):
-    if app.config.get("SENTRY_DSN"):
+    if dify_config.SENTRY_DSN:
         sentry_sdk.init(
-            dsn=app.config.get("SENTRY_DSN"),
+            dsn=dify_config.SENTRY_DSN,
             integrations=[FlaskIntegration(), CeleryIntegration()],
             ignore_errors=[
                 HTTPException,
@@ -29,9 +30,9 @@ def init_app(app):
                 InvokeRateLimitError,
                 parse_error.defaultErrorResponse,
             ],
-            traces_sample_rate=app.config.get("SENTRY_TRACES_SAMPLE_RATE", 1.0),
-            profiles_sample_rate=app.config.get("SENTRY_PROFILES_SAMPLE_RATE", 1.0),
-            environment=app.config.get("DEPLOY_ENV"),
-            release=f"dify-{app.config.get('CURRENT_VERSION')}-{app.config.get('COMMIT_SHA')}",
+            traces_sample_rate=dify_config.SENTRY_TRACES_SAMPLE_RATE,
+            profiles_sample_rate=dify_config.SENTRY_PROFILES_SAMPLE_RATE,
+            environment=dify_config.DEPLOY_ENV,
+            release=f"dify-{dify_config.CURRENT_VERSION}-{dify_config.COMMIT_SHA}",
             before_send=before_send,
         )
diff --git a/api/extensions/ext_storage.py b/api/extensions/ext_storage.py
index 5fc4f88832..86fadf23d7 100644
--- a/api/extensions/ext_storage.py
+++ b/api/extensions/ext_storage.py
@@ -15,7 +15,8 @@ class Storage:
 
     def init_app(self, app: Flask):
         storage_factory = self.get_storage_factory(dify_config.STORAGE_TYPE)
-        self.storage_runner = storage_factory(app=app)
+        with app.app_context():
+            self.storage_runner = storage_factory()
 
     @staticmethod
     def get_storage_factory(storage_type: str) -> type[BaseStorage]:
diff --git a/api/extensions/storage/aliyun_oss_storage.py b/api/extensions/storage/aliyun_oss_storage.py
index ae6911e945..01c1000e50 100644
--- a/api/extensions/storage/aliyun_oss_storage.py
+++ b/api/extensions/storage/aliyun_oss_storage.py
@@ -1,29 +1,27 @@
 from collections.abc import Generator
 
 import oss2 as aliyun_s3
-from flask import Flask
 
+from configs import dify_config
 from extensions.storage.base_storage import BaseStorage
 
 
 class AliyunOssStorage(BaseStorage):
     """Implementation for Aliyun OSS storage."""
 
-    def __init__(self, app: Flask):
-        super().__init__(app)
-
-        app_config = self.app.config
-        self.bucket_name = app_config.get("ALIYUN_OSS_BUCKET_NAME")
-        self.folder = app.config.get("ALIYUN_OSS_PATH")
+    def __init__(self):
+        super().__init__()
+        self.bucket_name = dify_config.ALIYUN_OSS_BUCKET_NAME
+        self.folder = dify_config.ALIYUN_OSS_PATH
         oss_auth_method = aliyun_s3.Auth
         region = None
-        if app_config.get("ALIYUN_OSS_AUTH_VERSION") == "v4":
+        if dify_config.ALIYUN_OSS_AUTH_VERSION == "v4":
             oss_auth_method = aliyun_s3.AuthV4
-            region = app_config.get("ALIYUN_OSS_REGION")
-        oss_auth = oss_auth_method(app_config.get("ALIYUN_OSS_ACCESS_KEY"), app_config.get("ALIYUN_OSS_SECRET_KEY"))
+            region = dify_config.ALIYUN_OSS_REGION
+        oss_auth = oss_auth_method(dify_config.ALIYUN_OSS_ACCESS_KEY, dify_config.ALIYUN_OSS_SECRET_KEY)
         self.client = aliyun_s3.Bucket(
             oss_auth,
-            app_config.get("ALIYUN_OSS_ENDPOINT"),
+            dify_config.ALIYUN_OSS_ENDPOINT,
             self.bucket_name,
             connect_timeout=30,
             region=region,
diff --git a/api/extensions/storage/aws_s3_storage.py b/api/extensions/storage/aws_s3_storage.py
index 507a303223..cb67313bb2 100644
--- a/api/extensions/storage/aws_s3_storage.py
+++ b/api/extensions/storage/aws_s3_storage.py
@@ -4,8 +4,8 @@ from collections.abc import Generator
 import boto3
 from botocore.client import Config
 from botocore.exceptions import ClientError
-from flask import Flask
 
+from configs import dify_config
 from extensions.storage.base_storage import BaseStorage
 
 logger = logging.getLogger(__name__)
@@ -14,26 +14,25 @@ logger = logging.getLogger(__name__)
 class AwsS3Storage(BaseStorage):
     """Implementation for Amazon Web Services S3 storage."""
 
-    def __init__(self, app: Flask):
-        super().__init__(app)
-        app_config = self.app.config
-        self.bucket_name = app_config.get("S3_BUCKET_NAME")
-        if app_config.get("S3_USE_AWS_MANAGED_IAM"):
+    def __init__(self):
+        super().__init__()
+        self.bucket_name = dify_config.S3_BUCKET_NAME
+        if dify_config.S3_USE_AWS_MANAGED_IAM:
             logger.info("Using AWS managed IAM role for S3")
 
             session = boto3.Session()
-            region_name = app_config.get("S3_REGION")
+            region_name = dify_config.S3_REGION
             self.client = session.client(service_name="s3", region_name=region_name)
         else:
             logger.info("Using ak and sk for S3")
 
             self.client = boto3.client(
                 "s3",
-                aws_secret_access_key=app_config.get("S3_SECRET_KEY"),
-                aws_access_key_id=app_config.get("S3_ACCESS_KEY"),
-                endpoint_url=app_config.get("S3_ENDPOINT"),
-                region_name=app_config.get("S3_REGION"),
-                config=Config(s3={"addressing_style": app_config.get("S3_ADDRESS_STYLE")}),
+                aws_secret_access_key=dify_config.S3_SECRET_KEY,
+                aws_access_key_id=dify_config.S3_ACCESS_KEY,
+                endpoint_url=dify_config.S3_ENDPOINT,
+                region_name=dify_config.S3_REGION,
+                config=Config(s3={"addressing_style": dify_config.S3_ADDRESS_STYLE}),
             )
         # create bucket
         try:
diff --git a/api/extensions/storage/azure_blob_storage.py b/api/extensions/storage/azure_blob_storage.py
index daea660a49..477507feda 100644
--- a/api/extensions/storage/azure_blob_storage.py
+++ b/api/extensions/storage/azure_blob_storage.py
@@ -2,8 +2,8 @@ from collections.abc import Generator
 from datetime import datetime, timedelta, timezone
 
 from azure.storage.blob import AccountSasPermissions, BlobServiceClient, ResourceTypes, generate_account_sas
-from flask import Flask
 
+from configs import dify_config
 from extensions.ext_redis import redis_client
 from extensions.storage.base_storage import BaseStorage
 
@@ -11,13 +11,12 @@ from extensions.storage.base_storage import BaseStorage
 class AzureBlobStorage(BaseStorage):
     """Implementation for Azure Blob storage."""
 
-    def __init__(self, app: Flask):
-        super().__init__(app)
-        app_config = self.app.config
-        self.bucket_name = app_config.get("AZURE_BLOB_CONTAINER_NAME")
-        self.account_url = app_config.get("AZURE_BLOB_ACCOUNT_URL")
-        self.account_name = app_config.get("AZURE_BLOB_ACCOUNT_NAME")
-        self.account_key = app_config.get("AZURE_BLOB_ACCOUNT_KEY")
+    def __init__(self):
+        super().__init__()
+        self.bucket_name = dify_config.AZURE_BLOB_CONTAINER_NAME
+        self.account_url = dify_config.AZURE_BLOB_ACCOUNT_URL
+        self.account_name = dify_config.AZURE_BLOB_ACCOUNT_NAME
+        self.account_key = dify_config.AZURE_BLOB_ACCOUNT_KEY
 
     def save(self, filename, data):
         client = self._sync_client()
diff --git a/api/extensions/storage/baidu_obs_storage.py b/api/extensions/storage/baidu_obs_storage.py
index c5acff4a9d..cd69439749 100644
--- a/api/extensions/storage/baidu_obs_storage.py
+++ b/api/extensions/storage/baidu_obs_storage.py
@@ -5,24 +5,23 @@ from collections.abc import Generator
 from baidubce.auth.bce_credentials import BceCredentials
 from baidubce.bce_client_configuration import BceClientConfiguration
 from baidubce.services.bos.bos_client import BosClient
-from flask import Flask
 
+from configs import dify_config
 from extensions.storage.base_storage import BaseStorage
 
 
 class BaiduObsStorage(BaseStorage):
     """Implementation for Baidu OBS storage."""
 
-    def __init__(self, app: Flask):
-        super().__init__(app)
-        app_config = self.app.config
-        self.bucket_name = app_config.get("BAIDU_OBS_BUCKET_NAME")
+    def __init__(self):
+        super().__init__()
+        self.bucket_name = dify_config.BAIDU_OBS_BUCKET_NAME
         client_config = BceClientConfiguration(
             credentials=BceCredentials(
-                access_key_id=app_config.get("BAIDU_OBS_ACCESS_KEY"),
-                secret_access_key=app_config.get("BAIDU_OBS_SECRET_KEY"),
+                access_key_id=dify_config.BAIDU_OBS_ACCESS_KEY,
+                secret_access_key=dify_config.BAIDU_OBS_SECRET_KEY,
             ),
-            endpoint=app_config.get("BAIDU_OBS_ENDPOINT"),
+            endpoint=dify_config.BAIDU_OBS_ENDPOINT,
         )
 
         self.client = BosClient(config=client_config)
diff --git a/api/extensions/storage/base_storage.py b/api/extensions/storage/base_storage.py
index c3fe9ec82a..50abab8537 100644
--- a/api/extensions/storage/base_storage.py
+++ b/api/extensions/storage/base_storage.py
@@ -3,16 +3,12 @@
 from abc import ABC, abstractmethod
 from collections.abc import Generator
 
-from flask import Flask
-
 
 class BaseStorage(ABC):
     """Interface for file storage."""
 
-    app = None
-
-    def __init__(self, app: Flask):
-        self.app = app
+    def __init__(self):  # noqa: B027
+        pass
 
     @abstractmethod
     def save(self, filename, data):
diff --git a/api/extensions/storage/google_cloud_storage.py b/api/extensions/storage/google_cloud_storage.py
index 2d1224fd74..e90392a6ba 100644
--- a/api/extensions/storage/google_cloud_storage.py
+++ b/api/extensions/storage/google_cloud_storage.py
@@ -3,20 +3,20 @@ import io
 import json
 from collections.abc import Generator
 
-from flask import Flask
 from google.cloud import storage as google_cloud_storage
 
+from configs import dify_config
 from extensions.storage.base_storage import BaseStorage
 
 
 class GoogleCloudStorage(BaseStorage):
     """Implementation for Google Cloud storage."""
 
-    def __init__(self, app: Flask):
-        super().__init__(app)
-        app_config = self.app.config
-        self.bucket_name = app_config.get("GOOGLE_STORAGE_BUCKET_NAME")
-        service_account_json_str = app_config.get("GOOGLE_STORAGE_SERVICE_ACCOUNT_JSON_BASE64")
+    def __init__(self):
+        super().__init__()
+
+        self.bucket_name = dify_config.GOOGLE_STORAGE_BUCKET_NAME
+        service_account_json_str = dify_config.GOOGLE_STORAGE_SERVICE_ACCOUNT_JSON_BASE64
         # if service_account_json_str is empty, use Application Default Credentials
         if service_account_json_str:
             service_account_json = base64.b64decode(service_account_json_str).decode("utf-8")
diff --git a/api/extensions/storage/huawei_obs_storage.py b/api/extensions/storage/huawei_obs_storage.py
index dd243d4001..3c443d87ac 100644
--- a/api/extensions/storage/huawei_obs_storage.py
+++ b/api/extensions/storage/huawei_obs_storage.py
@@ -1,22 +1,22 @@
 from collections.abc import Generator
 
-from flask import Flask
 from obs import ObsClient
 
+from configs import dify_config
 from extensions.storage.base_storage import BaseStorage
 
 
 class HuaweiObsStorage(BaseStorage):
     """Implementation for Huawei OBS storage."""
 
-    def __init__(self, app: Flask):
-        super().__init__(app)
-        app_config = self.app.config
-        self.bucket_name = app_config.get("HUAWEI_OBS_BUCKET_NAME")
+    def __init__(self):
+        super().__init__()
+
+        self.bucket_name = dify_config.HUAWEI_OBS_BUCKET_NAME
         self.client = ObsClient(
-            access_key_id=app_config.get("HUAWEI_OBS_ACCESS_KEY"),
-            secret_access_key=app_config.get("HUAWEI_OBS_SECRET_KEY"),
-            server=app_config.get("HUAWEI_OBS_SERVER"),
+            access_key_id=dify_config.HUAWEI_OBS_ACCESS_KEY,
+            secret_access_key=dify_config.HUAWEI_OBS_SECRET_KEY,
+            server=dify_config.HUAWEI_OBS_SERVER,
         )
 
     def save(self, filename, data):
diff --git a/api/extensions/storage/local_fs_storage.py b/api/extensions/storage/local_fs_storage.py
index 9308c4d180..e458b3ce8a 100644
--- a/api/extensions/storage/local_fs_storage.py
+++ b/api/extensions/storage/local_fs_storage.py
@@ -3,19 +3,20 @@ import shutil
 from collections.abc import Generator
 from pathlib import Path
 
-from flask import Flask
+from flask import current_app
 
+from configs import dify_config
 from extensions.storage.base_storage import BaseStorage
 
 
 class LocalFsStorage(BaseStorage):
     """Implementation for local filesystem storage."""
 
-    def __init__(self, app: Flask):
-        super().__init__(app)
-        folder = self.app.config.get("STORAGE_LOCAL_PATH")
+    def __init__(self):
+        super().__init__()
+        folder = dify_config.STORAGE_LOCAL_PATH
         if not os.path.isabs(folder):
-            folder = os.path.join(app.root_path, folder)
+            folder = os.path.join(current_app.root_path, folder)
         self.folder = folder
 
     def save(self, filename, data):
diff --git a/api/extensions/storage/oracle_oci_storage.py b/api/extensions/storage/oracle_oci_storage.py
index 5295dbdca2..e4f50b34e9 100644
--- a/api/extensions/storage/oracle_oci_storage.py
+++ b/api/extensions/storage/oracle_oci_storage.py
@@ -2,24 +2,24 @@ from collections.abc import Generator
 
 import boto3
 from botocore.exceptions import ClientError
-from flask import Flask
 
+from configs import dify_config
 from extensions.storage.base_storage import BaseStorage
 
 
 class OracleOCIStorage(BaseStorage):
     """Implementation for Oracle OCI storage."""
 
-    def __init__(self, app: Flask):
-        super().__init__(app)
-        app_config = self.app.config
-        self.bucket_name = app_config.get("OCI_BUCKET_NAME")
+    def __init__(self):
+        super().__init__()
+
+        self.bucket_name = dify_config.OCI_BUCKET_NAME
         self.client = boto3.client(
             "s3",
-            aws_secret_access_key=app_config.get("OCI_SECRET_KEY"),
-            aws_access_key_id=app_config.get("OCI_ACCESS_KEY"),
-            endpoint_url=app_config.get("OCI_ENDPOINT"),
-            region_name=app_config.get("OCI_REGION"),
+            aws_secret_access_key=dify_config.OCI_SECRET_KEY,
+            aws_access_key_id=dify_config.OCI_ACCESS_KEY,
+            endpoint_url=dify_config.OCI_ENDPOINT,
+            region_name=dify_config.OCI_REGION,
         )
 
     def save(self, filename, data):
diff --git a/api/extensions/storage/supabase_storage.py b/api/extensions/storage/supabase_storage.py
index 1e399f87c8..1119244574 100644
--- a/api/extensions/storage/supabase_storage.py
+++ b/api/extensions/storage/supabase_storage.py
@@ -2,25 +2,27 @@ import io
 from collections.abc import Generator
 from pathlib import Path
 
-from flask import Flask
 from supabase import Client
 
+from configs import dify_config
 from extensions.storage.base_storage import BaseStorage
 
 
 class SupabaseStorage(BaseStorage):
     """Implementation for supabase obs storage."""
 
-    def __init__(self, app: Flask):
-        super().__init__(app)
-        app_config = self.app.config
-        self.bucket_name = app_config.get("SUPABASE_BUCKET_NAME")
-        self.client = Client(
-            supabase_url=app_config.get("SUPABASE_URL"), supabase_key=app_config.get("SUPABASE_API_KEY")
-        )
-        self.create_bucket(
-            id=app_config.get("SUPABASE_BUCKET_NAME"), bucket_name=app_config.get("SUPABASE_BUCKET_NAME")
-        )
+    def __init__(self):
+        super().__init__()
+        if dify_config.SUPABASE_URL is None:
+            raise ValueError("SUPABASE_URL is not set")
+        if dify_config.SUPABASE_API_KEY is None:
+            raise ValueError("SUPABASE_API_KEY is not set")
+        if dify_config.SUPABASE_BUCKET_NAME is None:
+            raise ValueError("SUPABASE_BUCKET_NAME is not set")
+
+        self.bucket_name = dify_config.SUPABASE_BUCKET_NAME
+        self.client = Client(supabase_url=dify_config.SUPABASE_URL, supabase_key=dify_config.SUPABASE_API_KEY)
+        self.create_bucket(id=dify_config.SUPABASE_BUCKET_NAME, bucket_name=dify_config.SUPABASE_BUCKET_NAME)
 
     def create_bucket(self, id, bucket_name):
         if not self.bucket_exists():
diff --git a/api/extensions/storage/tencent_cos_storage.py b/api/extensions/storage/tencent_cos_storage.py
index c529dce7ad..8fd8e703a1 100644
--- a/api/extensions/storage/tencent_cos_storage.py
+++ b/api/extensions/storage/tencent_cos_storage.py
@@ -1,23 +1,23 @@
 from collections.abc import Generator
 
-from flask import Flask
 from qcloud_cos import CosConfig, CosS3Client
 
+from configs import dify_config
 from extensions.storage.base_storage import BaseStorage
 
 
 class TencentCosStorage(BaseStorage):
     """Implementation for Tencent Cloud COS storage."""
 
-    def __init__(self, app: Flask):
-        super().__init__(app)
-        app_config = self.app.config
-        self.bucket_name = app_config.get("TENCENT_COS_BUCKET_NAME")
+    def __init__(self):
+        super().__init__()
+
+        self.bucket_name = dify_config.TENCENT_COS_BUCKET_NAME
         config = CosConfig(
-            Region=app_config.get("TENCENT_COS_REGION"),
-            SecretId=app_config.get("TENCENT_COS_SECRET_ID"),
-            SecretKey=app_config.get("TENCENT_COS_SECRET_KEY"),
-            Scheme=app_config.get("TENCENT_COS_SCHEME"),
+            Region=dify_config.TENCENT_COS_REGION,
+            SecretId=dify_config.TENCENT_COS_SECRET_ID,
+            SecretKey=dify_config.TENCENT_COS_SECRET_KEY,
+            Scheme=dify_config.TENCENT_COS_SCHEME,
         )
         self.client = CosS3Client(config)
 
diff --git a/api/extensions/storage/volcengine_tos_storage.py b/api/extensions/storage/volcengine_tos_storage.py
index 1bedcf24c2..389c5630e3 100644
--- a/api/extensions/storage/volcengine_tos_storage.py
+++ b/api/extensions/storage/volcengine_tos_storage.py
@@ -1,23 +1,22 @@
 from collections.abc import Generator
 
 import tos
-from flask import Flask
 
+from configs import dify_config
 from extensions.storage.base_storage import BaseStorage
 
 
 class VolcengineTosStorage(BaseStorage):
     """Implementation for Volcengine TOS storage."""
 
-    def __init__(self, app: Flask):
-        super().__init__(app)
-        app_config = self.app.config
-        self.bucket_name = app_config.get("VOLCENGINE_TOS_BUCKET_NAME")
+    def __init__(self):
+        super().__init__()
+        self.bucket_name = dify_config.VOLCENGINE_TOS_BUCKET_NAME
         self.client = tos.TosClientV2(
-            ak=app_config.get("VOLCENGINE_TOS_ACCESS_KEY"),
-            sk=app_config.get("VOLCENGINE_TOS_SECRET_KEY"),
-            endpoint=app_config.get("VOLCENGINE_TOS_ENDPOINT"),
-            region=app_config.get("VOLCENGINE_TOS_REGION"),
+            ak=dify_config.VOLCENGINE_TOS_ACCESS_KEY,
+            sk=dify_config.VOLCENGINE_TOS_SECRET_KEY,
+            endpoint=dify_config.VOLCENGINE_TOS_ENDPOINT,
+            region=dify_config.VOLCENGINE_TOS_REGION,
         )
 
     def save(self, filename, data):
diff --git a/api/factories/file_factory.py b/api/factories/file_factory.py
index eac5090c2b..fa88e2b4fe 100644
--- a/api/factories/file_factory.py
+++ b/api/factories/file_factory.py
@@ -2,6 +2,7 @@ import mimetypes
 from collections.abc import Mapping, Sequence
 from typing import Any
 
+import httpx
 from sqlalchemy import select
 
 from constants import AUDIO_EXTENSIONS, DOCUMENT_EXTENSIONS, IMAGE_EXTENSIONS, VIDEO_EXTENSIONS
@@ -154,7 +155,7 @@ def _build_from_local_file(
     file = File(
         id=mapping.get("id"),
         filename=row.name,
-        extension=row.extension,
+        extension="." + row.extension,
         mime_type=row.mime_type,
         tenant_id=tenant_id,
         type=file_type,
@@ -177,25 +178,29 @@ def _build_from_remote_url(
     url = mapping.get("url")
     if not url:
         raise ValueError("Invalid file url")
-    resp = ssrf_proxy.head(url, follow_redirects=True)
-    resp.raise_for_status()
 
-    # Try to extract filename from response headers or URL
-    content_disposition = resp.headers.get("Content-Disposition")
-    if content_disposition:
-        filename = content_disposition.split("filename=")[-1].strip('"')
+    resp = ssrf_proxy.head(url, follow_redirects=True)
+    if resp.status_code == httpx.codes.OK:
+        # Try to extract filename from response headers or URL
+        content_disposition = resp.headers.get("Content-Disposition")
+        if content_disposition:
+            filename = content_disposition.split("filename=")[-1].strip('"')
+        else:
+            filename = url.split("/")[-1].split("?")[0]
+        # Create the File object
+        file_size = int(resp.headers.get("Content-Length", -1))
+        mime_type = str(resp.headers.get("Content-Type", ""))
     else:
-        filename = url.split("/")[-1].split("?")[0]
+        filename = ""
+        file_size = -1
+        mime_type = ""
+
     # If filename is empty, set a default one
     if not filename:
         filename = "unknown_file"
-
     # Determine file extension
     extension = "." + filename.split(".")[-1] if "." in filename else ".bin"
 
-    # Create the File object
-    file_size = int(resp.headers.get("Content-Length", -1))
-    mime_type = str(resp.headers.get("Content-Type", ""))
     if not mime_type:
         mime_type, _ = mimetypes.guess_type(url)
     file = File(
diff --git a/api/libs/helper.py b/api/libs/helper.py
index 48ef1bdc48..dd7c3fb7d0 100644
--- a/api/libs/helper.py
+++ b/api/libs/helper.py
@@ -12,9 +12,10 @@ from hashlib import sha256
 from typing import Any, Optional, Union
 from zoneinfo import available_timezones
 
-from flask import Response, current_app, stream_with_context
+from flask import Response, stream_with_context
 from flask_restful import fields
 
+from configs import dify_config
 from core.app.features.rate_limiting.rate_limit import RateLimitGenerator
 from core.file import helpers as file_helpers
 from extensions.ext_redis import redis_client
@@ -214,7 +215,7 @@ class TokenManager:
         if additional_data:
             token_data.update(additional_data)
 
-        expiry_minutes = current_app.config[f"{token_type.upper()}_TOKEN_EXPIRY_MINUTES"]
+        expiry_minutes = dify_config.model_dump().get(f"{token_type.upper()}_TOKEN_EXPIRY_MINUTES")
         token_key = cls._get_token_key(token, token_type)
         expiry_time = int(expiry_minutes * 60)
         redis_client.setex(token_key, expiry_time, json.dumps(token_data))
diff --git a/api/libs/login.py b/api/libs/login.py
index 8431d967bd..ab0ac3beb2 100644
--- a/api/libs/login.py
+++ b/api/libs/login.py
@@ -1,4 +1,3 @@
-import os
 from functools import wraps
 
 from flask import current_app, g, has_request_context, request
@@ -7,6 +6,7 @@ from flask_login.config import EXEMPT_METHODS
 from werkzeug.exceptions import Unauthorized
 from werkzeug.local import LocalProxy
 
+from configs import dify_config
 from extensions.ext_database import db
 from models.account import Account, Tenant, TenantAccountJoin
 from models.model import EndUser
@@ -53,8 +53,7 @@ def login_required(func):
     @wraps(func)
     def decorated_view(*args, **kwargs):
         auth_header = request.headers.get("Authorization")
-        admin_api_key_enable = os.getenv("ADMIN_API_KEY_ENABLE", default="False")
-        if admin_api_key_enable.lower() == "true":
+        if dify_config.ADMIN_API_KEY_ENABLE:
             if auth_header:
                 if " " not in auth_header:
                     raise Unauthorized("Invalid Authorization header format. Expected 'Bearer <api-key>' format.")
@@ -62,10 +61,10 @@ def login_required(func):
                 auth_scheme = auth_scheme.lower()
                 if auth_scheme != "bearer":
                     raise Unauthorized("Invalid Authorization header format. Expected 'Bearer <api-key>' format.")
-                admin_api_key = os.getenv("ADMIN_API_KEY")
 
+                admin_api_key = dify_config.ADMIN_API_KEY
                 if admin_api_key:
-                    if os.getenv("ADMIN_API_KEY") == auth_token:
+                    if admin_api_key == auth_token:
                         workspace_id = request.headers.get("X-WORKSPACE-ID")
                         if workspace_id:
                             tenant_account_join = (
@@ -83,7 +82,7 @@ def login_required(func):
                                     account.current_tenant = tenant
                                     current_app.login_manager._update_request_context_with_user(account)
                                     user_logged_in.send(current_app._get_current_object(), user=_get_user())
-        if request.method in EXEMPT_METHODS or current_app.config.get("LOGIN_DISABLED"):
+        if request.method in EXEMPT_METHODS or dify_config.LOGIN_DISABLED:
             pass
         elif not current_user.is_authenticated:
             return current_app.login_manager.unauthorized()
diff --git a/api/models/model.py b/api/models/model.py
index 06947b043e..843c6d4e2c 100644
--- a/api/models/model.py
+++ b/api/models/model.py
@@ -1404,7 +1404,7 @@ class UploadFile(Base):
         size: int,
         extension: str,
         mime_type: str,
-        created_by_role: str,
+        created_by_role: CreatedByRole,
         created_by: str,
         created_at: datetime,
         used: bool,
@@ -1419,7 +1419,7 @@ class UploadFile(Base):
         self.size = size
         self.extension = extension
         self.mime_type = mime_type
-        self.created_by_role = created_by_role
+        self.created_by_role = created_by_role.value
         self.created_by = created_by
         self.created_at = created_at
         self.used = used
diff --git a/api/poetry.lock b/api/poetry.lock
index 18e26d2be3..6d9ff3eb5c 100644
--- a/api/poetry.lock
+++ b/api/poetry.lock
@@ -6921,119 +6921,120 @@ files = [
 
 [[package]]
 name = "pydantic"
-version = "2.8.2"
+version = "2.9.2"
 description = "Data validation using Python type hints"
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "pydantic-2.8.2-py3-none-any.whl", hash = "sha256:73ee9fddd406dc318b885c7a2eab8a6472b68b8fb5ba8150949fc3db939f23c8"},
-    {file = "pydantic-2.8.2.tar.gz", hash = "sha256:6f62c13d067b0755ad1c21a34bdd06c0c12625a22b0fc09c6b149816604f7c2a"},
+    {file = "pydantic-2.9.2-py3-none-any.whl", hash = "sha256:f048cec7b26778210e28a0459867920654d48e5e62db0958433636cde4254f12"},
+    {file = "pydantic-2.9.2.tar.gz", hash = "sha256:d155cef71265d1e9807ed1c32b4c8deec042a44a50a4188b25ac67ecd81a9c0f"},
 ]
 
 [package.dependencies]
-annotated-types = ">=0.4.0"
-pydantic-core = "2.20.1"
+annotated-types = ">=0.6.0"
+pydantic-core = "2.23.4"
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 ]
 
 [package.dependencies]
@@ -7063,13 +7064,13 @@ semver = ["semver (>=3.0.2)"]
 
 [[package]]
 name = "pydantic-settings"
-version = "2.4.0"
+version = "2.6.0"
 description = "Settings management using Pydantic"
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "pydantic_settings-2.4.0-py3-none-any.whl", hash = "sha256:bb6849dc067f1687574c12a639e231f3a6feeed0a12d710c1382045c5db1c315"},
-    {file = "pydantic_settings-2.4.0.tar.gz", hash = "sha256:ed81c3a0f46392b4d7c0a565c05884e6e54b3456e6f0fe4d8814981172dc9a88"},
+    {file = "pydantic_settings-2.6.0-py3-none-any.whl", hash = "sha256:4a819166f119b74d7f8c765196b165f95cc7487ce58ea27dec8a5a26be0970e0"},
+    {file = "pydantic_settings-2.6.0.tar.gz", hash = "sha256:44a1804abffac9e6a30372bb45f6cafab945ef5af25e66b1c634c01dd39e0188"},
 ]
 
 [package.dependencies]
@@ -10795,4 +10796,4 @@ cffi = ["cffi (>=1.11)"]
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.10,<3.13"
-content-hash = "642b2dae9e18ee6671d3d2c7129cb9a77327b69dacba996d00de2a9475d5bad3"
+content-hash = "5b102e3bc077ed730e9fb7be9015541111ffe7787888372d50a757aecb1d9eff"
diff --git a/api/pyproject.toml b/api/pyproject.toml
index b705161e58..6b41f79a27 100644
--- a/api/pyproject.toml
+++ b/api/pyproject.toml
@@ -87,14 +87,6 @@ ignore = [
 "tests/*" = [
     "F811", # redefined-while-unused
     "F401", # unused-import
-    "PT001", # missing-function-docstring
-    "PT004", # missing-parameter-docstring
-]
-"core/rag/extractor/word_extractor.py" = [
-    "RUF100", # Unused `noqa` directive
-]
-"core/tools/provider/builtin/gitlab/tools/gitlab_commits.py" = [
-    "PLR1714", # Consider merging multiple comparisons
 ]
 
 [tool.ruff.lint.pyflakes]
@@ -163,8 +155,8 @@ openpyxl = "~3.1.5"
 pandas = { version = "~2.2.2", extras = ["performance", "excel"] }
 psycopg2-binary = "~2.9.6"
 pycryptodome = "3.19.1"
-pydantic = "~2.8.2"
-pydantic-settings = "~2.4.0"
+pydantic = "~2.9.2"
+pydantic-settings = "~2.6.0"
 pydantic_extra_types = "~2.9.0"
 pyjwt = "~2.8.0"
 pypdfium2 = "~4.17.0"
diff --git a/api/services/enterprise/base.py b/api/services/enterprise/base.py
index 7d4fdfd2d0..92098f06cc 100644
--- a/api/services/enterprise/base.py
+++ b/api/services/enterprise/base.py
@@ -15,8 +15,6 @@ class EnterpriseRequest:
     @classmethod
     def send_request(cls, method, endpoint, json=None, params=None):
         headers = {"Content-Type": "application/json", "Enterprise-Api-Secret-Key": cls.secret_key}
-
         url = f"{cls.base_url}{endpoint}"
         response = requests.request(method, url, json=json, params=params, headers=headers, proxies=cls.proxies)
-
         return response.json()
diff --git a/api/services/file_service.py b/api/services/file_service.py
index 84ccc4e882..22ea923f6b 100644
--- a/api/services/file_service.py
+++ b/api/services/file_service.py
@@ -20,6 +20,7 @@ from core.rag.extractor.extract_processor import ExtractProcessor
 from extensions.ext_database import db
 from extensions.ext_storage import storage
 from models.account import Account
+from models.enums import CreatedByRole
 from models.model import EndUser, UploadFile
 from services.errors.file import FileNotExistsError, FileTooLargeError, UnsupportedFileTypeError
 
@@ -85,7 +86,7 @@ class FileService:
             size=file_size,
             extension=extension,
             mime_type=file.mimetype,
-            created_by_role=("account" if isinstance(user, Account) else "end_user"),
+            created_by_role=(CreatedByRole.ACCOUNT if isinstance(user, Account) else CreatedByRole.END_USER),
             created_by=user.id,
             created_at=datetime.datetime.now(datetime.timezone.utc).replace(tzinfo=None),
             used=False,
@@ -118,6 +119,7 @@ class FileService:
             extension="txt",
             mime_type="text/plain",
             created_by=current_user.id,
+            created_by_role=CreatedByRole.ACCOUNT,
             created_at=datetime.datetime.now(datetime.timezone.utc).replace(tzinfo=None),
             used=True,
             used_by=current_user.id,
diff --git a/api/tests/integration_tests/controllers/app_fixture.py b/api/tests/integration_tests/controllers/app_fixture.py
index 93065ee95c..32e8c11d19 100644
--- a/api/tests/integration_tests/controllers/app_fixture.py
+++ b/api/tests/integration_tests/controllers/app_fixture.py
@@ -1,6 +1,7 @@
 import pytest
 
 from app_factory import create_app
+from configs import dify_config
 
 mock_user = type(
     "MockUser",
@@ -20,5 +21,5 @@ mock_user = type(
 @pytest.fixture
 def app():
     app = create_app()
-    app.config["LOGIN_DISABLED"] = True
+    dify_config.LOGIN_DISABLED = True
     return app
diff --git a/api/tests/integration_tests/workflow/nodes/test_code.py b/api/tests/integration_tests/workflow/nodes/test_code.py
index fd0f25cf04..4de985ae7c 100644
--- a/api/tests/integration_tests/workflow/nodes/test_code.py
+++ b/api/tests/integration_tests/workflow/nodes/test_code.py
@@ -102,6 +102,8 @@ def test_execute_code(setup_code_executor_mock):
     }
 
     node = init_code_node(code_config)
+    node.graph_runtime_state.variable_pool.add(["1", "123", "args1"], 1)
+    node.graph_runtime_state.variable_pool.add(["1", "123", "args2"], 2)
 
     # execute node
     result = node._run()
@@ -146,6 +148,8 @@ def test_execute_code_output_validator(setup_code_executor_mock):
     }
 
     node = init_code_node(code_config)
+    node.graph_runtime_state.variable_pool.add(["1", "123", "args1"], 1)
+    node.graph_runtime_state.variable_pool.add(["1", "123", "args2"], 2)
 
     # execute node
     result = node._run()
diff --git a/api/tests/unit_tests/core/workflow/nodes/test_http_request_node.py b/api/tests/unit_tests/core/workflow/nodes/test_http_request_node.py
index 28ecdaadb0..2a5fda48b1 100644
--- a/api/tests/unit_tests/core/workflow/nodes/test_http_request_node.py
+++ b/api/tests/unit_tests/core/workflow/nodes/test_http_request_node.py
@@ -1,3 +1,5 @@
+import json
+
 import httpx
 
 from core.app.entities.app_invoke_entities import InvokeFrom
@@ -14,7 +16,8 @@ from core.workflow.nodes.http_request import (
     HttpRequestNodeBody,
     HttpRequestNodeData,
 )
-from core.workflow.nodes.http_request.executor import _plain_text_to_dict
+from core.workflow.nodes.http_request.entities import HttpRequestNodeTimeout
+from core.workflow.nodes.http_request.executor import Executor, _plain_text_to_dict
 from models.enums import UserFrom
 from models.workflow import WorkflowNodeExecutionStatus, WorkflowType
 
@@ -200,3 +203,167 @@ def test_http_request_node_form_with_file(monkeypatch):
     assert result.status == WorkflowNodeExecutionStatus.SUCCEEDED
     assert result.outputs is not None
     assert result.outputs["body"] == ""
+
+
+def test_executor_with_json_body_and_number_variable():
+    # Prepare the variable pool
+    variable_pool = VariablePool(
+        system_variables={},
+        user_inputs={},
+    )
+    variable_pool.add(["pre_node_id", "number"], 42)
+
+    # Prepare the node data
+    node_data = HttpRequestNodeData(
+        title="Test JSON Body with Number Variable",
+        method="post",
+        url="https://api.example.com/data",
+        authorization=HttpRequestNodeAuthorization(type="no-auth"),
+        headers="Content-Type: application/json",
+        params="",
+        body=HttpRequestNodeBody(
+            type="json",
+            data=[
+                BodyData(
+                    key="",
+                    type="text",
+                    value='{"number": {{#pre_node_id.number#}}}',
+                )
+            ],
+        ),
+    )
+
+    # Initialize the Executor
+    executor = Executor(
+        node_data=node_data,
+        timeout=HttpRequestNodeTimeout(connect=10, read=30, write=30),
+        variable_pool=variable_pool,
+    )
+
+    # Check the executor's data
+    assert executor.method == "post"
+    assert executor.url == "https://api.example.com/data"
+    assert executor.headers == {"Content-Type": "application/json"}
+    assert executor.params == {}
+    assert executor.json == {"number": 42}
+    assert executor.data is None
+    assert executor.files is None
+    assert executor.content is None
+
+    # Check the raw request (to_log method)
+    raw_request = executor.to_log()
+    assert "POST /data HTTP/1.1" in raw_request
+    assert "Host: api.example.com" in raw_request
+    assert "Content-Type: application/json" in raw_request
+    assert '{"number": 42}' in raw_request
+
+
+def test_executor_with_json_body_and_object_variable():
+    # Prepare the variable pool
+    variable_pool = VariablePool(
+        system_variables={},
+        user_inputs={},
+    )
+    variable_pool.add(["pre_node_id", "object"], {"name": "John Doe", "age": 30, "email": "john@example.com"})
+
+    # Prepare the node data
+    node_data = HttpRequestNodeData(
+        title="Test JSON Body with Object Variable",
+        method="post",
+        url="https://api.example.com/data",
+        authorization=HttpRequestNodeAuthorization(type="no-auth"),
+        headers="Content-Type: application/json",
+        params="",
+        body=HttpRequestNodeBody(
+            type="json",
+            data=[
+                BodyData(
+                    key="",
+                    type="text",
+                    value="{{#pre_node_id.object#}}",
+                )
+            ],
+        ),
+    )
+
+    # Initialize the Executor
+    executor = Executor(
+        node_data=node_data,
+        timeout=HttpRequestNodeTimeout(connect=10, read=30, write=30),
+        variable_pool=variable_pool,
+    )
+
+    # Check the executor's data
+    assert executor.method == "post"
+    assert executor.url == "https://api.example.com/data"
+    assert executor.headers == {"Content-Type": "application/json"}
+    assert executor.params == {}
+    assert executor.json == {"name": "John Doe", "age": 30, "email": "john@example.com"}
+    assert executor.data is None
+    assert executor.files is None
+    assert executor.content is None
+
+    # Check the raw request (to_log method)
+    raw_request = executor.to_log()
+    assert "POST /data HTTP/1.1" in raw_request
+    assert "Host: api.example.com" in raw_request
+    assert "Content-Type: application/json" in raw_request
+    assert '"name": "John Doe"' in raw_request
+    assert '"age": 30' in raw_request
+    assert '"email": "john@example.com"' in raw_request
+
+
+def test_executor_with_json_body_and_nested_object_variable():
+    # Prepare the variable pool
+    variable_pool = VariablePool(
+        system_variables={},
+        user_inputs={},
+    )
+    variable_pool.add(["pre_node_id", "object"], {"name": "John Doe", "age": 30, "email": "john@example.com"})
+
+    # Prepare the node data
+    node_data = HttpRequestNodeData(
+        title="Test JSON Body with Nested Object Variable",
+        method="post",
+        url="https://api.example.com/data",
+        authorization=HttpRequestNodeAuthorization(type="no-auth"),
+        headers="Content-Type: application/json",
+        params="",
+        body=HttpRequestNodeBody(
+            type="json",
+            data=[
+                BodyData(
+                    key="",
+                    type="text",
+                    value='{"object": {{#pre_node_id.object#}}}',
+                )
+            ],
+        ),
+    )
+
+    # Initialize the Executor
+    executor = Executor(
+        node_data=node_data,
+        timeout=HttpRequestNodeTimeout(connect=10, read=30, write=30),
+        variable_pool=variable_pool,
+    )
+
+    # Check the executor's data
+    assert executor.method == "post"
+    assert executor.url == "https://api.example.com/data"
+    assert executor.headers == {"Content-Type": "application/json"}
+    assert executor.params == {}
+    assert executor.json == {"object": {"name": "John Doe", "age": 30, "email": "john@example.com"}}
+    assert executor.data is None
+    assert executor.files is None
+    assert executor.content is None
+
+    # Check the raw request (to_log method)
+    raw_request = executor.to_log()
+    assert "POST /data HTTP/1.1" in raw_request
+    assert "Host: api.example.com" in raw_request
+    assert "Content-Type: application/json" in raw_request
+    assert '"object": {' in raw_request
+    assert '"name": "John Doe"' in raw_request
+    assert '"age": 30' in raw_request
+    assert '"email": "john@example.com"' in raw_request
diff --git a/api/tests/unit_tests/oss/volcengine_tos/test_volcengine_tos.py b/api/tests/unit_tests/oss/volcengine_tos/test_volcengine_tos.py
index 3f334a3764..545d18044d 100644
--- a/api/tests/unit_tests/oss/volcengine_tos/test_volcengine_tos.py
+++ b/api/tests/unit_tests/oss/volcengine_tos/test_volcengine_tos.py
@@ -25,7 +25,7 @@ class VolcengineTosTest:
             return cls._instance
 
     def __init__(self):
-        self.storage = VolcengineTosStorage(app=Flask(__name__))
+        self.storage = VolcengineTosStorage()
         self.storage.bucket_name = get_example_bucket()
         self.storage.client = TosClientV2(
             ak="dify",
diff --git a/web/app/account/account-page/index.tsx b/web/app/account/account-page/index.tsx
index b42b481eba..71540ce3b1 100644
--- a/web/app/account/account-page/index.tsx
+++ b/web/app/account/account-page/index.tsx
@@ -23,10 +23,6 @@ const titleClassName = `
 const descriptionClassName = `
   mt-1 text-xs font-normal text-gray-500
 `
-const inputClassName = `
-  mt-2 w-full px-3 py-2 bg-gray-100 rounded
-  text-sm font-normal text-gray-800
-`
 
 const validPassword = /^(?=.*[a-zA-Z])(?=.*\d).{8,}$/
 
diff --git a/web/app/components/base/audio-btn/index.tsx b/web/app/components/base/audio-btn/index.tsx
index d57c79b571..593411ed4d 100644
--- a/web/app/components/base/audio-btn/index.tsx
+++ b/web/app/components/base/audio-btn/index.tsx
@@ -1,10 +1,9 @@
 'use client'
-import { useRef, useState } from 'react'
+import { useState } from 'react'
 import { t } from 'i18next'
 import { useParams, usePathname } from 'next/navigation'
 import s from './style.module.css'
 import Tooltip from '@/app/components/base/tooltip'
-import { randomString } from '@/utils'
 import Loading from '@/app/components/base/loading'
 import { AudioPlayerManager } from '@/app/components/base/audio-btn/audio.player.manager'
 
@@ -28,7 +27,6 @@ const AudioBtn = ({
 }: AudioBtnProps) => {
   const [audioState, setAudioState] = useState<AudioState>('initial')
 
-  const selector = useRef(`play-tooltip-${randomString(4)}`)
   const params = useParams()
   const pathname = usePathname()
   const audio_finished_call = (event: string): any => {
diff --git a/web/app/components/base/features/feature-panel/index.tsx b/web/app/components/base/features/feature-panel/index.tsx
deleted file mode 100644
index 72799ef2fc..0000000000
--- a/web/app/components/base/features/feature-panel/index.tsx
+++ /dev/null
@@ -1,119 +0,0 @@
-import {
-  memo,
-  useMemo,
-} from 'react'
-import { useTranslation } from 'react-i18next'
-import type { OnFeaturesChange } from '../types'
-import { useFeatures } from '../hooks'
-import FileUpload from './file-upload'
-import OpeningStatement from './opening-statement'
-import type { OpeningStatementProps } from './opening-statement'
-import SuggestedQuestionsAfterAnswer from './suggested-questions-after-answer'
-import TextToSpeech from './text-to-speech'
-import SpeechToText from './speech-to-text'
-import Citation from './citation'
-import Moderation from './moderation'
-import type { InputVar } from '@/app/components/workflow/types'
-
-export type FeaturePanelProps = {
-  onChange?: OnFeaturesChange
-  openingStatementProps: OpeningStatementProps
-  disabled?: boolean
-  workflowVariables: InputVar[]
-}
-const FeaturePanel = ({
-  onChange,
-  openingStatementProps,
-  disabled,
-  workflowVariables,
-}: FeaturePanelProps) => {
-  const { t } = useTranslation()
-  const features = useFeatures(s => s.features)
-
-  const showAdvanceFeature = useMemo(() => {
-    return features.opening?.enabled || features.suggested?.enabled || features.speech2text?.enabled || features.text2speech?.enabled || features.citation?.enabled
-  }, [features])
-
-  const showToolFeature = useMemo(() => {
-    return features.moderation?.enabled
-  }, [features])
-
-  return (
-    <div className='space-y-3'>
-      <FileUpload
-        onChange={onChange}
-        disabled={disabled}
-      />
-      {
-        showAdvanceFeature && (
-          <div>
-            <div className='flex items-center'>
-              <div className='shrink-0 text-xs font-semibold text-gray-500'>
-                {t('appDebug.feature.groupChat.title')}
-              </div>
-              <div
-                className='grow ml-3 h-[1px]'
-                style={{ background: 'linear-gradient(270deg, rgba(243, 244, 246, 0) 0%, #F3F4F6 100%)' }}
-              ></div>
-            </div>
-            <div className='py-2 space-y-2'>
-              {
-                features.opening?.enabled && (
-                  <OpeningStatement
-                    {...openingStatementProps}
-                    onChange={onChange}
-                    readonly={disabled}
-                    workflowVariables={workflowVariables}
-                  />
-                )
-              }
-              {
-                features.suggested?.enabled && (
-                  <SuggestedQuestionsAfterAnswer />
-                )
-              }
-              {
-                features.text2speech?.enabled && (
-                  <TextToSpeech onChange={onChange} disabled={disabled} />
-                )
-              }
-              {
-                features.speech2text?.enabled && (
-                  <SpeechToText />
-                )
-              }
-              {
-                features.citation?.enabled && (
-                  <Citation />
-                )
-              }
-            </div>
-          </div>
-        )
-      }
-      {
-        showToolFeature && (
-          <div>
-            <div className='flex items-center'>
-              <div className='shrink-0 text-xs font-semibold text-gray-500'>
-                {t('appDebug.feature.groupChat.title')}
-              </div>
-              <div
-                className='grow ml-3 h-[1px]'
-                style={{ background: 'linear-gradient(270deg, rgba(243, 244, 246, 0) 0%, #F3F4F6 100%)' }}
-              ></div>
-            </div>
-            <div className='py-2 space-y-2'>
-              {
-                features.moderation?.enabled && (
-                  <Moderation onChange={onChange} disabled={disabled} />
-                )
-              }
-            </div>
-          </div>
-        )
-      }
-    </div>
-  )
-}
-export default memo(FeaturePanel)
diff --git a/web/app/components/base/features/feature-panel/opening-statement/index.tsx b/web/app/components/base/features/feature-panel/opening-statement/index.tsx
deleted file mode 100644
index 1f102700ad..0000000000
--- a/web/app/components/base/features/feature-panel/opening-statement/index.tsx
+++ /dev/null
@@ -1,328 +0,0 @@
-/* eslint-disable multiline-ternary */
-'use client'
-import type { FC } from 'react'
-import React, { useEffect, useRef, useState } from 'react'
-import produce from 'immer'
-import {
-  RiAddLine,
-  RiDeleteBinLine,
-} from '@remixicon/react'
-import { useTranslation } from 'react-i18next'
-import { useBoolean } from 'ahooks'
-import { ReactSortable } from 'react-sortablejs'
-import {
-  useFeatures,
-  useFeaturesStore,
-} from '../../hooks'
-import type { OnFeaturesChange } from '../../types'
-import cn from '@/utils/classnames'
-import Panel from '@/app/components/app/configuration/base/feature-panel'
-import Button from '@/app/components/base/button'
-import OperationBtn from '@/app/components/app/configuration/base/operation-btn'
-import { getInputKeys } from '@/app/components/base/block-input'
-import ConfirmAddVar from '@/app/components/app/configuration/config-prompt/confirm-add-var'
-import { getNewVar } from '@/utils/var'
-import { varHighlightHTML } from '@/app/components/app/configuration/base/var-highlight'
-import type { PromptVariable } from '@/models/debug'
-import type { InputVar } from '@/app/components/workflow/types'
-
-const MAX_QUESTION_NUM = 5
-
-export type OpeningStatementProps = {
-  onChange?: OnFeaturesChange
-  readonly?: boolean
-  promptVariables?: PromptVariable[]
-  onAutoAddPromptVariable: (variable: PromptVariable[]) => void
-  workflowVariables?: InputVar[]
-}
-
-// regex to match the {{}} and replace it with a span
-const regex = /\{\{([^}]+)\}\}/g
-
-const OpeningStatement: FC<OpeningStatementProps> = ({
-  onChange,
-  readonly,
-  promptVariables = [],
-  onAutoAddPromptVariable,
-  workflowVariables = [],
-}) => {
-  const { t } = useTranslation()
-  const featureStore = useFeaturesStore()
-  const openingStatement = useFeatures(s => s.features.opening)
-  const value = openingStatement?.opening_statement || ''
-  const suggestedQuestions = openingStatement?.suggested_questions || []
-  const [notIncludeKeys, setNotIncludeKeys] = useState<string[]>([])
-
-  const hasValue = !!(value || '').trim()
-  const inputRef = useRef<HTMLTextAreaElement>(null)
-
-  const [isFocus, { setTrue: didSetFocus, setFalse: setBlur }] = useBoolean(false)
-
-  const setFocus = () => {
-    didSetFocus()
-    setTimeout(() => {
-      const input = inputRef.current
-      if (input) {
-        input.focus()
-        input.setSelectionRange(input.value.length, input.value.length)
-      }
-    }, 0)
-  }
-
-  const [tempValue, setTempValue] = useState(value)
-  useEffect(() => {
-    setTempValue(value || '')
-  }, [value])
-
-  const [tempSuggestedQuestions, setTempSuggestedQuestions] = useState(suggestedQuestions || [])
-  const notEmptyQuestions = tempSuggestedQuestions.filter(question => !!question && question.trim())
-  const coloredContent = (tempValue || '')
-    .replace(/</g, '&lt;')
-    .replace(/>/g, '&gt;')
-    .replace(regex, varHighlightHTML({ name: '$1' })) // `<span class="${highLightClassName}">{{$1}}</span>`
-    .replace(/\n/g, '<br />')
-
-  const handleEdit = () => {
-    if (readonly)
-      return
-    setFocus()
-  }
-
-  const [isShowConfirmAddVar, { setTrue: showConfirmAddVar, setFalse: hideConfirmAddVar }] = useBoolean(false)
-
-  const handleCancel = () => {
-    setBlur()
-    setTempValue(value)
-    setTempSuggestedQuestions(suggestedQuestions)
-  }
-
-  const handleConfirm = () => {
-    const keys = getInputKeys(tempValue)
-    const promptKeys = promptVariables.map(item => item.key)
-    const workflowVariableKeys = workflowVariables.map(item => item.variable)
-    let notIncludeKeys: string[] = []
-
-    if (promptKeys.length === 0 && workflowVariables.length === 0) {
-      if (keys.length > 0)
-        notIncludeKeys = keys
-    }
-    else {
-      if (workflowVariables.length > 0)
-        notIncludeKeys = keys.filter(key => !workflowVariableKeys.includes(key))
-
-      else notIncludeKeys = keys.filter(key => !promptKeys.includes(key))
-    }
-
-    if (notIncludeKeys.length > 0) {
-      setNotIncludeKeys(notIncludeKeys)
-      showConfirmAddVar()
-      return
-    }
-    setBlur()
-    const { getState } = featureStore!
-    const {
-      features,
-      setFeatures,
-    } = getState()
-
-    const newFeatures = produce(features, (draft) => {
-      if (draft.opening) {
-        draft.opening.opening_statement = tempValue
-        draft.opening.suggested_questions = tempSuggestedQuestions
-      }
-    })
-    setFeatures(newFeatures)
-
-    if (onChange)
-      onChange(newFeatures)
-  }
-
-  const cancelAutoAddVar = () => {
-    const { getState } = featureStore!
-    const {
-      features,
-      setFeatures,
-    } = getState()
-
-    const newFeatures = produce(features, (draft) => {
-      if (draft.opening)
-        draft.opening.opening_statement = tempValue
-    })
-    setFeatures(newFeatures)
-
-    if (onChange)
-      onChange(newFeatures)
-    hideConfirmAddVar()
-    setBlur()
-  }
-
-  const autoAddVar = () => {
-    const { getState } = featureStore!
-    const {
-      features,
-      setFeatures,
-    } = getState()
-
-    const newFeatures = produce(features, (draft) => {
-      if (draft.opening)
-        draft.opening.opening_statement = tempValue
-    })
-    setFeatures(newFeatures)
-    if (onChange)
-      onChange(newFeatures)
-    onAutoAddPromptVariable([...notIncludeKeys.map(key => getNewVar(key, 'string'))])
-    hideConfirmAddVar()
-    setBlur()
-  }
-
-  const headerRight = !readonly ? (
-    isFocus ? (
-      <div className='flex items-center space-x-1'>
-        <Button
-          variant='ghost'
-          size='small'
-          onClick={handleCancel}
-        >
-          {t('common.operation.cancel')}
-        </Button>
-        <Button size='small' onClick={handleConfirm} variant="primary">{t('common.operation.save')}</Button>
-      </div>
-    ) : (
-      <OperationBtn type='edit' actionName={hasValue ? '' : t('appDebug.openingStatement.writeOpener') as string} onClick={handleEdit} />
-    )
-  ) : null
-
-  const renderQuestions = () => {
-    return isFocus ? (
-      <div>
-        <div className='flex items-center py-2'>
-          <div className='shrink-0 flex space-x-0.5 leading-[18px] text-xs font-medium text-gray-500'>
-            <div className='uppercase'>{t('appDebug.openingStatement.openingQuestion')}</div>
-            <div>·</div>
-            <div>{tempSuggestedQuestions.length}/{MAX_QUESTION_NUM}</div>
-          </div>
-          <div className='ml-3 grow w-0 h-px bg-[#243, 244, 246]'></div>
-        </div>
-        <ReactSortable
-          className="space-y-1"
-          list={tempSuggestedQuestions.map((name, index) => {
-            return {
-              id: index,
-              name,
-            }
-          })}
-          setList={list => setTempSuggestedQuestions(list.map(item => item.name))}
-          handle='.handle'
-          ghostClass="opacity-50"
-          animation={150}
-        >
-          {tempSuggestedQuestions.map((question, index) => {
-            return (
-              <div className='group relative rounded-lg border border-gray-200 flex items-center pl-2.5 hover:border-gray-300 hover:bg-white' key={index}>
-                <div className='handle flex items-center justify-center w-4 h-4 cursor-grab'>
-                  <svg width="6" height="10" viewBox="0 0 6 10" fill="none" xmlns="http://www.w3.org/2000/svg">
-                    <path fillRule="evenodd" clipRule="evenodd" d="M1 2C1.55228 2 2 1.55228 2 1C2 0.447715 1.55228 0 1 0C0.447715 0 0 0.447715 0 1C0 1.55228 0.447715 2 1 2ZM1 6C1.55228 6 2 5.55228 2 5C2 4.44772 1.55228 4 1 4C0.447715 4 0 4.44772 0 5C0 5.55228 0.447715 6 1 6ZM6 1C6 1.55228 5.55228 2 5 2C4.44772 2 4 1.55228 4 1C4 0.447715 4.44772 0 5 0C5.55228 0 6 0.447715 6 1ZM5 6C5.55228 6 6 5.55228 6 5C6 4.44772 5.55228 4 5 4C4.44772 4 4 4.44772 4 5C4 5.55228 4.44772 6 5 6ZM2 9C2 9.55229 1.55228 10 1 10C0.447715 10 0 9.55229 0 9C0 8.44771 0.447715 8 1 8C1.55228 8 2 8.44771 2 9ZM5 10C5.55228 10 6 9.55229 6 9C6 8.44771 5.55228 8 5 8C4.44772 8 4 8.44771 4 9C4 9.55229 4.44772 10 5 10Z" fill="#98A2B3" />
-                  </svg>
-                </div>
-                <input
-                  type="input"
-                  value={question || ''}
-                  onChange={(e) => {
-                    const value = e.target.value
-                    setTempSuggestedQuestions(tempSuggestedQuestions.map((item, i) => {
-                      if (index === i)
-                        return value
-
-                      return item
-                    }))
-                  }}
-                  className={'w-full overflow-x-auto pl-1.5 pr-8 text-sm leading-9 text-gray-900 border-0 grow h-9 bg-transparent focus:outline-none cursor-pointer rounded-lg'}
-                />
-
-                <div
-                  className='block absolute top-1/2 translate-y-[-50%] right-1.5 p-1 rounded-md cursor-pointer hover:bg-[#FEE4E2] hover:text-[#D92D20]'
-                  onClick={() => {
-                    setTempSuggestedQuestions(tempSuggestedQuestions.filter((_, i) => index !== i))
-                  }}
-                >
-                  <RiDeleteBinLine className='w-3.5 h-3.5' />
-                </div>
-              </div>
-            )
-          })}</ReactSortable>
-        {tempSuggestedQuestions.length < MAX_QUESTION_NUM && (
-          <div
-            onClick={() => { setTempSuggestedQuestions([...tempSuggestedQuestions, '']) }}
-            className='mt-1 flex items-center h-9 px-3 gap-2 rounded-lg cursor-pointer text-gray-400  bg-gray-100 hover:bg-gray-200'>
-            <RiAddLine className='w-4 h-4' />
-            <div className='text-gray-500 text-[13px]'>{t('appDebug.variableConfig.addOption')}</div>
-          </div>
-        )}
-      </div>
-    ) : (
-      <div className='mt-1.5 flex flex-wrap'>
-        {notEmptyQuestions.map((question, index) => {
-          return (
-            <div key={index} className='mt-1 mr-1 max-w-full truncate last:mr-0 shrink-0 leading-8 items-center px-2.5 rounded-lg border border-gray-200 shadow-xs bg-white text-[13px] font-normal text-gray-900 cursor-pointer'>
-              {question}
-            </div>
-          )
-        })}
-      </div>
-    )
-  }
-
-  return (
-    <Panel
-      className={cn(isShowConfirmAddVar && 'h-[220px]', 'relative !bg-gray-25')}
-      title={t('appDebug.openingStatement.title')}
-      headerIcon={
-        <svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
-          <path fillRule="evenodd" clipRule="evenodd" d="M8.33353 1.33301C4.83572 1.33301 2.00019 4.16854 2.00019 7.66634C2.00019 8.37301 2.11619 9.05395 2.3307 9.69036C2.36843 9.80229 2.39063 9.86853 2.40507 9.91738L2.40979 9.93383L2.40729 9.93903C2.39015 9.97437 2.36469 10.0218 2.31705 10.11L1.2158 12.1484C1.14755 12.2746 1.07633 12.4064 1.02735 12.5209C0.978668 12.6348 0.899813 12.8437 0.938613 13.0914C0.984094 13.3817 1.15495 13.6373 1.40581 13.7903C1.61981 13.9208 1.843 13.9279 1.96683 13.9264C2.09141 13.925 2.24036 13.9095 2.38314 13.8947L5.81978 13.5395C5.87482 13.5338 5.9036 13.5309 5.92468 13.5292L5.92739 13.529L5.93564 13.532C5.96154 13.5413 5.99666 13.5548 6.0573 13.5781C6.76459 13.8506 7.53244 13.9997 8.33353 13.9997C11.8313 13.9997 14.6669 11.1641 14.6669 7.66634C14.6669 4.16854 11.8313 1.33301 8.33353 1.33301ZM5.9799 5.72116C6.73142 5.08698 7.73164 5.27327 8.33144 5.96584C8.93125 5.27327 9.91854 5.09365 10.683 5.72116C11.4474 6.34867 11.5403 7.41567 10.9501 8.16572C10.5845 8.6304 9.6668 9.47911 9.02142 10.0576C8.78435 10.2702 8.66582 10.3764 8.52357 10.4192C8.40154 10.456 8.26134 10.456 8.13931 10.4192C7.99706 10.3764 7.87853 10.2702 7.64147 10.0576C6.99609 9.47911 6.07839 8.6304 5.71276 8.16572C5.12259 7.41567 5.22839 6.35534 5.9799 5.72116Z" fill="#E74694" />
-        </svg>
-      }
-      headerRight={headerRight}
-      hasHeaderBottomBorder={!hasValue}
-      isFocus={isFocus}
-    >
-      <div className='text-gray-700 text-sm'>
-        {(hasValue || (!hasValue && isFocus)) ? (
-          <>
-            {isFocus
-              ? (
-                <div>
-                  <textarea
-                    ref={inputRef}
-                    value={tempValue}
-                    rows={3}
-                    onChange={e => setTempValue(e.target.value)}
-                    className="w-full px-0 text-sm  border-0 bg-transparent focus:outline-none "
-                    placeholder={t('appDebug.openingStatement.placeholder') as string}
-                  >
-                  </textarea>
-                </div>
-              )
-              : (
-                <div dangerouslySetInnerHTML={{
-                  __html: coloredContent,
-                }}></div>
-              )}
-            {renderQuestions()}
-          </>) : (
-          <div className='pt-2 pb-1 text-xs text-gray-500'>{t('appDebug.openingStatement.noDataPlaceHolder')}</div>
-        )}
-
-        {isShowConfirmAddVar && (
-          <ConfirmAddVar
-            varNameArr={notIncludeKeys}
-            onConfirm={autoAddVar}
-            onCancel={cancelAutoAddVar}
-            onHide={hideConfirmAddVar}
-          />
-        )}
-
-      </div>
-    </Panel>
-  )
-}
-export default React.memo(OpeningStatement)
diff --git a/web/app/components/base/features/new-feature-panel/dialog-wrapper.tsx b/web/app/components/base/features/new-feature-panel/dialog-wrapper.tsx
index 4975a06d15..e2b03faad2 100644
--- a/web/app/components/base/features/new-feature-panel/dialog-wrapper.tsx
+++ b/web/app/components/base/features/new-feature-panel/dialog-wrapper.tsx
@@ -45,7 +45,7 @@ const DialogWrapper = ({
               leaveFrom="opacity-100 scale-100"
               leaveTo="opacity-0 scale-95"
             >
-              <Dialog.Panel className={cn('grow flex relative w-[420px] h-0 p-0 overflow-hidden text-left align-middle transition-all transform bg-components-panel-bg-alt border-components-panel-border shadow-xl', inWorkflow ? 'border-t-[0.5px] border-l-[0.5px] border-b-[0.5px] rounded-l-2xl' : 'border-[0.5px] rounded-2xl', className)}>
+              <Dialog.Panel className={cn('grow flex flex-col relative w-[420px] h-0 p-0 overflow-hidden text-left align-middle transition-all transform bg-components-panel-bg-alt border-components-panel-border shadow-xl', inWorkflow ? 'border-t-[0.5px] border-l-[0.5px] border-b-[0.5px] rounded-l-2xl' : 'border-[0.5px] rounded-2xl', className)}>
                 {children}
               </Dialog.Panel>
             </Transition.Child>
diff --git a/web/app/components/base/features/new-feature-panel/index.tsx b/web/app/components/base/features/new-feature-panel/index.tsx
index dcdb1baefc..78204f2c05 100644
--- a/web/app/components/base/features/new-feature-panel/index.tsx
+++ b/web/app/components/base/features/new-feature-panel/index.tsx
@@ -80,7 +80,7 @@ const NewFeaturePanel = ({
                   <span>{isChatMode ? t('workflow.common.fileUploadTip') : t('workflow.common.ImageUploadLegacyTip')}</span>
                   <a
                     className='text-text-accent'
-                    href={`https://docs.dify.ai/${locale === LanguagesSupported[1] && 'v/zh-hans/'}'guides/workflow/bulletin`}
+                    href={`https://docs.dify.ai/${locale === LanguagesSupported[1] ? 'v/zh-hans/' : ''}guides/workflow/bulletin`}
                     target='_blank' rel='noopener noreferrer'
                   >{t('workflow.common.featuresDocLink')}</a>
                 </div>
diff --git a/web/app/components/base/prompt-editor/constants.tsx b/web/app/components/base/prompt-editor/constants.tsx
index 4740042135..00360c7bc1 100644
--- a/web/app/components/base/prompt-editor/constants.tsx
+++ b/web/app/components/base/prompt-editor/constants.tsx
@@ -52,7 +52,7 @@ export const getInputVars = (text: string): ValueSelector[] => {
 
 export const FILE_EXTS: Record<string, string[]> = {
   [SupportUploadFileTypes.image]: ['JPG', 'JPEG', 'PNG', 'GIF', 'WEBP', 'SVG'],
-  [SupportUploadFileTypes.document]: ['TXT', 'MARKDOWN', 'PDF', 'HTML', 'XLSX', 'XLS', 'DOCX', 'CSV', 'EML', 'MSG', 'PPTX', 'PPT', 'XML', 'EPUB'],
+  [SupportUploadFileTypes.document]: ['TXT', 'MD', 'MARKDOWN', 'PDF', 'HTML', 'XLSX', 'XLS', 'DOCX', 'CSV', 'EML', 'MSG', 'PPTX', 'PPT', 'XML', 'EPUB'],
   [SupportUploadFileTypes.audio]: ['MP3', 'M4A', 'WAV', 'WEBM', 'AMR'],
   [SupportUploadFileTypes.video]: ['MP4', 'MOV', 'MPEG', 'MPGA'],
 }
diff --git a/web/app/components/datasets/create/step-two/language-select/index.tsx b/web/app/components/datasets/create/step-two/language-select/index.tsx
index fab2bb1c71..41f3e0abb5 100644
--- a/web/app/components/datasets/create/step-two/language-select/index.tsx
+++ b/web/app/components/datasets/create/step-two/language-select/index.tsx
@@ -24,7 +24,7 @@ const LanguageSelect: FC<ILanguageSelectProps> = ({
       disabled={disabled}
       htmlContent={
         <div className='w-full py-1'>
-          {languages.filter(language => language.supported).map(({ prompt_name, name }) => (
+          {languages.filter(language => language.supported).map(({ prompt_name }) => (
             <div
               key={prompt_name}
               className='py-2 px-3 mx-1 flex items-center gap-2 hover:bg-gray-100 rounded-lg cursor-pointer text-gray-700 text-sm'