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Diffstat (limited to '')
| -rw-r--r-- | synapse/storage/_base.py | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/synapse/storage/_base.py b/synapse/storage/_base.py index 7f5477dee5..840a4994bb 100644 --- a/synapse/storage/_base.py +++ b/synapse/storage/_base.py @@ -33,6 +33,7 @@ import sys import time import threading +DEBUG_CACHES = False logger = logging.getLogger(__name__) @@ -146,7 +147,17 @@ def cached(max_entries=1000, num_args=1, lru=False): @defer.inlineCallbacks def wrapped(self, *keyargs): try: - defer.returnValue(cache.get(*keyargs)) + cached_result = cache.get(*keyargs) + if DEBUG_CACHES: + actual_result = yield orig(self, *keyargs) + if actual_result != cached_result: + logger.error( + "Stale cache entry %s%r: cached: %r, actual %r", + orig.__name__, keyargs, + cached_result, actual_result, + ) + raise ValueError("Stale cache entry") + defer.returnValue(cached_result) except KeyError: sequence = cache.sequence |