diff options
| -rw-r--r-- | synapse/util/caches/__init__.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/synapse/util/caches/__init__.py b/synapse/util/caches/__init__.py index d968b71e7a..183faf75a1 100644 --- a/synapse/util/caches/__init__.py +++ b/synapse/util/caches/__init__.py @@ -41,6 +41,8 @@ response_cache_total = Gauge("synapse_util_caches_response_cache:total", "", ["n def register_cache(cache_type, cache_name, cache): # Check if the metric is already registered. Unregister it, if so. + # This usually happens during tests, as at runtime these caches are + # effectively singletons. metric_name = "cache_%s_%s" % (cache_type, cache_name) if metric_name in collectors_by_name.keys(): REGISTRY.unregister(collectors_by_name[metric_name]) |