fix: use permanent cache for all types dict and build only once (#3711)

* use permanent cache for all types dict and build only once


---------

Co-authored-by: ming <itestmycode@gmail.com>

src/backend/base/langflow/interface/types.py

@@ -4,7 +4,6 @@ from typing import TYPE_CHECKING
 
 from loguru import logger
 from langflow.custom.utils import abuild_custom_components, build_custom_components
-from langflow.services.cache.base import AsyncBaseCacheService
 
 if TYPE_CHECKING:
     from langflow.services.cache.base import CacheService
@@ -57,47 +56,18 @@ def get_all_components(components_paths, as_dict=False):
     return components
 
 
+all_types_dict_cache = None
+
+
 async def get_and_cache_all_types_dict(
     settings_service: "SettingsService",
     cache_service: "CacheService",
     force_refresh: bool = False,
     lock: asyncio.Lock | None = None,
 ):
-    async def get_from_cache(key):
-        """
-        Retrieves a value from the cache based on the given key.
-
-        Args:
-            key: The key to retrieve the value from the cache.
-
-        Returns:
-            The value associated with the given key in the cache.
-
-        Raises:
-            None.
-        """
-        return await cache_service.get(key=key, lock=lock)
-
-    async def set_in_cache(key, value):
-        """
-        Sets the given key-value pair in the cache.
-
-        Parameters:
-        - key: The key to set in the cache.
-        - value: The value to associate with the key in the cache.
-
-        Returns:
-        None
-        """
-        if isinstance(cache_service, AsyncBaseCacheService):
-            await cache_service.set(key=key, value=value, lock=lock)
-        else:
-            cache_service.set(key=key, value=value, lock=lock)
-
-    all_types_dict = await get_from_cache("all_types_dict")
-    if not all_types_dict or force_refresh:
+    global all_types_dict_cache
+    if all_types_dict_cache is None:
         logger.debug("Building langchain types dict")
-        all_types_dict = await aget_all_types_dict(settings_service.settings.components_path)
-        await set_in_cache("all_types_dict", all_types_dict)
+        all_types_dict_cache = await aget_all_types_dict(settings_service.settings.components_path)
 
-    return all_types_dict
+    return all_types_dict_cache