Fix bug redis

Author: cavanierc

django_prometheus/cache/backends/redis.py

@@ -25,6 +25,7 @@ def get(self, key, default=None, version=None, client=None):
         else:
             if cached is not None:
                 django_cache_hits_total.labels(backend="redis").inc()
+                return cached
             else:
                 django_cache_misses_total.labels(backend="redis").inc()
-            return cached or default
+                return default