Jesper Nøhr avatar Jesper Nøhr committed 3f47d73

adding redis cache, fixing docstring in memcacher

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Files changed (2)


 import logging
     from md5 import md5
 class MemcachedCache(object):
-    Simple disk cache, using hashes of the keys as filenames.
-    Might well have undetected collisions; only for toy/test use.
-    """
+    Simple memcache cache.
+    """    
     def __init__(self, servers, timeout=600):
         Constructor. 'servers' is a LIST of servers to connect to.


+import logging
+import redis
+    from hashlib import md5
+except ImportError:
+    from md5 import md5
+class RedisCache(object):
+    """
+    Simple Redis cache.
+    """
+    def __init__(self, server, db=0):
+        self._cache = redis.Redis(host=server, db=db)
+    def __getitem__(self, key):
+        value = self._cache.get(key)
+        if value is not None:
+            logging.debug("cache HIT: %r" % key)
+            return value
+        else:
+            logging.debug("cache MISS: %r" % key)
+            raise KeyError("No such key %r" % key)
+    def __setitem__(self, key, value):
+        logging.debug("cache SET: %r (%i)" % (key, len(value)))
+        self._cache.set(key, value)
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