today i want to continue my little series about how to use redis as rails cache. i will show you how to build a caching system that does not rely on cache invalidation and is able to constantly deliver up to date cached results.
in my last article about using redis as rails cache i used the redis ‘keys’ function to invalidate cache. as my readers noted, and i experienced myself, this is not a good idea if you plan on storing a few million keys in your redis-db. so today we’ll look at how to do this invalidation […]