With the introduction of Redis your options in the key-value space just grew and your choice of which to pick just got a lot harder. But when you think about it, that's not a bad position to be in at all. Redis (REmote DIctionary Server) - a key-value database. It's similar to memcached but the dataset is not volatile, and values can be strings, exactly like in memcached, but also lists and sets w
![Product: Redis - Not Just Another Key-Value Store - High Scalability -](https://cdn-ak-scissors.b.st-hatena.com/image/square/6d76e896b0ab6ca870e2c682860be6fffbc4e015/height=288;version=1;width=512/https%3A%2F%2Fstatic.ghost.org%2Fv5.0.0%2Fimages%2Fpublication-cover.jpg)