|
Memcache and xCache are different, xcache is opcode cache and used by php engine. memcache is a kind of variable cache -- it's used and configurable by web app like vBulletin. so for quick answer: xcache will speed up php code execution, memcache can be used by vBulletin to store some variables for fast access. so both cache will speed up vBulletin. if no vBulletin core or module configure to use memcache, the memcache don't help at all.
|