Add LRU to ES fqn (#9233)

ingestion/src/metadata/ingestion/ometa/mixins/es_mixin.py

@@ -13,6 +13,7 @@ Mixin class containing Lineage specific methods
 
 To be used by OpenMetadata class
 """
+import functools
 import traceback
 from typing import Generic, List, Optional, Type, TypeVar
 
@@ -38,6 +39,7 @@ class ESMixin(Generic[T]):
 
     fqdn_search = "/search/query?q=fullyQualifiedName:{fqn}&from={from_}&size={size}&index={index}"
 
+    @functools.lru_cache()
     def _search_es_entity(
         self, entity_type: Type[T], query_string: str
     ) -> Optional[List[T]]:
@@ -47,13 +49,13 @@ class ESMixin(Generic[T]):
         :param query_string: Query to run
         :return: List of Entities or None
         """
-
         response = self.client.get(query_string)
 
         if response:
             return [
                 self.get_by_name(
-                    entity=entity_type, fqn=hit["_source"]["fullyQualifiedName"]
+                    entity=entity_type,
+                    fqn=hit["_source"]["fullyQualifiedName"],
                 )
                 for hit in response["hits"]["hits"]
             ] or None
@@ -84,12 +86,10 @@ class ESMixin(Generic[T]):
         )
 
         try:
-            entity_list = self._search_es_entity(
+            response = self._search_es_entity(
                 entity_type=entity_type, query_string=query_string
             )
-            if entity_list:
-                return entity_list
-
+            return response
         except KeyError as err:
             logger.debug(traceback.format_exc())
             logger.warning(