* Redis is a lot simpler and more dynamic since it isn't intended to solve petabyte problems or used on large clusters of computers. An example, you can play wi

* Redis is a lot simpler and more dynamic since it isn't intended to solve petabyte problems or used on large clusters of computers. An example, you can play with Redis online: http://try.redis-db.com/ http://try.redis-db.com/ * Redis is much easier to understand, since Redis is a key-value store with rich datatypes (such as lists, sets and hashes). Cassandra is a database paradigm shift build to solve Google scale problems. * Redis perfomance is similar to memcached - and memcached's perfomance is pretty amazing. I would only pick something like Cassandra if I had to store a lot of data on a large number of computers. If I wanted to do something fast and I know that my data won't grow to terabytes then Redis is a very good choice.