✨ Cache list service request in catalog (ITISFoundation#2874)

Author: sanderegg

packages/settings-library/src/settings_library/postgres.py

@@ -64,7 +64,14 @@ def dsn(self) -> str:
 
     @cached_property
     def dsn_with_async_sqlalchemy(self) -> str:
-        dsn = self.dsn.replace("postgresql", "postgresql+asyncpg")
+        dsn: str = PostgresDsn.build(
+            scheme="postgresql+asyncpg",
+            user=self.POSTGRES_USER,
+            password=self.POSTGRES_PASSWORD.get_secret_value(),
+            host=self.POSTGRES_HOST,
+            port=f"{self.POSTGRES_PORT}",
+            path=f"/{self.POSTGRES_DB}",
+        )
         return dsn
 
     @cached_property

services/catalog/src/simcore_service_catalog/api/routes/services.py

@@ -39,6 +39,7 @@
 }
 
 DIRECTOR_CACHING_TTL = 5 * MINUTE
+LIST_SERVICES_CACHING_TTL = 30
 
 
 def _prepare_service_details(
@@ -69,8 +70,19 @@ def _prepare_service_details(
     return validated_service
 
 
+def _build_cache_key(fct, *_, **kwargs):
+    return f"{fct.__name__}_{kwargs['user_id']}_{kwargs['x_simcore_products_name']}_{kwargs['details']}"
+
+
+# NOTE: this call is pretty expensive and can be called several times
+# (when e2e runs or by the webserver when listing projects) therefore
+# a cache is setup here
 @router.get("", response_model=List[ServiceOut], **RESPONSE_MODEL_POLICY)
 @cancellable_request
+@cached(
+    ttl=LIST_SERVICES_CACHING_TTL,
+    key_builder=_build_cache_key,
+)
 async def list_services(
     request: Request,  # pylint:disable=unused-argument
     user_id: PositiveInt,