Caching in PHP(MySQL MEMORY engine)

I would like to ask peop开发者_JAVA百科le who have experience with MySQL MEMORY engine. Is it a good choice for cheap and fast caching system.

Cheap and fast? Sure - it does the trick. And it's just so simple to write an SQL query instead of dealing with PHP extensions that you are unfamiliar with.

Basically, what I use it for is storing session data, but unless you want to populate it with huge amounts of content - I guess it's good for caching too.