Comment by antirez

Wow I'm learning today that Github used Redis for persistent data, now that they moved away :-) Anyway very happy that Redis helped to run such an important site. From the blog post it looks like that for certain things to move away from Redis was hard even if they are very skilled with MySQL, this is a good thing from the POV of Redis since it means that Redis allows to model certain things easily. However they wanted to move away as an important priority, so I wish to know why they wanted to move away so badly and how Redis could be improved in order to serve better the users. If Redis was better for their use case, they could have avoided to move to MySQL I guess. Unfortunately the blog post is short of details on that regard, perhaps because the blog post author(s) are too gentle to bash Redis after using it for a long time.