A cache store implementation which stores data in Memcached: http://memcached.org/
This is currently the most popular cache store for production websites.
Clustering and load balancing. One can specify multiple memcached servers, and MemCacheStore will load balance between all available servers. If a server goes down, then MemCacheStore will ignore it until it comes back up.
MemCacheStore implements the Strategy::LocalCache strategy which implements an in-memory cache inside of a block.
ESCAPE_KEY_CHARS = /[\x00-\x20%\x7F-\xFF]/n