The HandlerSocket plugin for MySQL currently lacks atomic operations . It is impossible to implement counters (increment/decrement value) or REPLACE functionality with the current implementation.
It currently exceeds the performance of Memcache for get/set operations, but I want to see how fast it is once atomic operations are implemented. Until then, I don't think it is a serious contender for replacing Memcache for the cache layer in a complex environment.
My SQL Dump
MySQL musings by a self professed MySQL Geek
- HandlerSocket is great, but don't compare it to Memcache just yet.