Clarify that 0 or None for CELERY_MAX_CACHED_RESULTS means no limit, not no cache.
@@ -1142,7 +1142,7 @@ CELERY_MAX_CACHED_RESULTS
Result backends caches ready results used by the client.
This is the total number of results to cache before older results are evicted.
-The default is 5000.
+The default is 5000. 0 or None means no limit.
.. note::
George Sibble