Can redis fully replace mysql?

Question

Simple question, could I conceivably use redis instead of mysql for all sorts of web applications: social networks, geo-location services etc?

Answer 1

Nothing is impossible in IT. But some things might get extremely complicated.

Using key-value storage for things like full-text search might be extremely painfull.

Also, as far as I see, it lack support for large, clustered databases: so on MySQL you have no problems if you grow over 100s of Gb in Database, and on Redis... Well, it will require more effort :-)

So use it for what it was developed for, storing simple things which just need to be retreived by id.