title: Redis vs Memcahced vs Hazelcast
body: <p>I'm looking for an in-memory database used to simply record metrics of read and writes done on parts of a database so that I know which queries are executed most often. I also want this in-memory database to be distributed over nodes, as is the main database.</p>
  
  <p>Any advice? Are there better alternatives to redis, memcached and hazelcast?</p>