encode/decode base64 - you can't throw direct pickles at redis-py, because it…

encode/decode base64 - you can't throw direct pickles at redis-py, because it tries to treat them like unicode.

redis_cache/cache.py

@@ -30,9 +30,6 @@ class CacheClass(BaseCache):
 
         """
 
-        _key = self._prepare_key(key)
-        _value = self._prepare_key(value)
-        
         if self._cache.exists(_key):
             return False
 
@@ -57,7 +54,7 @@ class CacheClass(BaseCache):
             value = smart_str(value)
 
             # hydrate that pickle
-            value = pickle.loads(value)
+            value = pickle.loads(value.decode('base64'))
 
             if isinstance(value, basestring):
                 return smart_unicode(value)
@@ -71,7 +68,7 @@ class CacheClass(BaseCache):
         value = self._prepare_value(value)
 
         # pickle the value
-        value = pickle.dumps(value)
+        value = pickle.dumps(value).encode('base64')
 
         # store the key/value pair
         result = self._cache.set(key, value)