Whats the best way to manage keys (in memcache ) to prevent stale cached values?

Question

Ive recently implemented memcache on my site which has been under heavy mysql load (mysql was as optimized as I could make it). It solved all my load issues, and site is running

Answer 1

Memcached::set has an expire parameter. Perhaps you can let this default to an hour, but for the pages that return search results - or in your forum, you can set this to a shorter period of time.