feat: add LANGFLOW_AUTO_SAVING_INTERVAL .env variable for flow auto-saving debounce (#3478)

* 📝 (langflow): Add support for configuring auto saving interval for Langflow
📝 (langflow): Update ConfigResponse and Settings to include auto_saving_interval
📝 (frontend): Update useGetConfigQuery and useSaveConfig to handle auto_saving_interval
📝 (frontend): Update useAutoSaveFlow and flowsManagerStore to handle auto saving interval

* 📝 (util.py): add support for setting auto_saving_interval in update_settings function to allow customization of auto-saving interval

src/backend/base/langflow/__main__.py

@@ -125,6 +125,11 @@ def run(
         help="Defines if the auto save is enabled.",
         envvar="LANGFLOW_AUTO_SAVING",
     ),
+    auto_saving_interval: bool = typer.Option(
+        True,
+        help="Defines the debounce time for the auto save.",
+        envvar="LANGFLOW_AUTO_SAVING_INTERVAL",
+    ),
 ):
     """
     Run Langflow.
@@ -143,6 +148,7 @@ def run(
         components_path=components_path,
         store=store,
         auto_saving=auto_saving,
+        auto_saving_interval=auto_saving_interval,
     )
     # create path object if path is provided
     static_files_dir: Optional[Path] = Path(path) if path else None

src/backend/base/langflow/api/v1/schemas.py

@@ -331,3 +331,4 @@ class FlowDataRequest(BaseModel):
 class ConfigResponse(BaseModel):
     frontend_timeout: int
     auto_saving: bool
+    auto_saving_interval: int

src/backend/base/langflow/services/settings/base.py

@@ -157,6 +157,8 @@ class Settings(BaseSettings):
     # Config
     auto_saving: bool = True
     """If set to True, Langflow will auto save flows."""
+    auto_saving_interval: int = 300
+    """The interval in ms at which Langflow will auto save flows."""
 
     @field_validator("dev")
     @classmethod

src/backend/base/langflow/utils/util.py

@@ -429,6 +429,7 @@ def update_settings(
     components_path: Optional[Path] = None,
     store: bool = True,
     auto_saving: bool = True,
+    auto_saving_interval: int = 300,
 ):
     """Update the settings from a config file."""
     from langflow.services.utils import initialize_settings_service
@@ -455,6 +456,9 @@ def update_settings(
     if not auto_saving:
         logger.debug("Setting auto_saving to False")
         settings_service.settings.update_settings(auto_saving=False)
+    if auto_saving_interval:
+        logger.debug(f"Setting auto_saving_interval to {auto_saving_interval}")
+        settings_service.settings.update_settings(auto_saving_interval=auto_saving_interval)
 
 
 def is_class_method(func, cls):