added constant for cache size

googleapis · Sep 6, 2023 · 9ae434c · 9ae434c
1 parent 30189ea
commit 9ae434c
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/google/api_core/gapic_v1/routing_header.py b/google/api_core/gapic_v1/routing_header.py
@@ -25,6 +25,8 @@
 from urllib.parse import urlencode
 
 ROUTING_METADATA_KEY = "x-goog-request-params"
+# use caching to avoid repeated computation
+ROUTING_PARAM_CACHE_SIZE = 32
 
 
 def to_routing_header(params, qualified_enums=True):
@@ -54,7 +56,7 @@ def to_routing_header(params, qualified_enums=True):
     )
 
 
-@functools.lru_cache(32)
+@functools.lru_cache(ROUTING_PARAM_CACHE_SIZE)
 def to_grpc_metadata(params, qualified_enums=True):
     """Returns the gRPC metadata containing the routing headers for the given
     request parameters.