Make RedisCache inherit from BaseCache to define its interface

Author: Robert Kirberich

cachecontrol/caches/redis_cache.py

@@ -1,6 +1,7 @@
 from __future__ import division
 
 from datetime import datetime
+from cachecontrol.cache import BaseCache
 
 
 def total_seconds(td):
@@ -13,7 +14,7 @@ def total_seconds(td):
     return int((ms + secs * 10**6) / 10**6)
 
 
-class RedisCache(object):
+class RedisCache(BaseCache):
 
     def __init__(self, conn):
         self.conn = conn