Update (28th April 2009) – Added Tokyo Tyrant What is Redis? Briefly, Redis is a key-value store that stores the values to disk periodically instead of after every set. What is Tokyo Tyrant? Tokyo Tyrant is similar to Redis – a key-value store. Aim This is a brief comparison of the performance of Redis and MySQL. It is not very thorough and is only to be used as an indication as to whether Redis m