Nothing wrong with Memcached but at high loads weird issues will crop up with it too and if you don't have an understanding of how slabs work in Memcached (I do

Nothing wrong with Memcached but at high loads weird issues will crop up with it too and if you don't have an understanding of how slabs work in Memcached (I doubt your average dev does) you are going to have a hard time reasoning with it as well. Eventually someone will say "why didn't you just use redis for caching?".