Manual:$wgMemCachedServers

---

Memcached settings: $wgMemCachedServers
Memcached servers
Introduced in version:	pre 1.1.0
Removed in version:	still in use
Allowed values:
Default value:	array( '127.0.0.1:11000' )

Other settings: Alphabetical | By Function

Array of memcached servers (for use with the memcached memory-based object store)

§Details

To use multiple servers (physically separate boxes or multiple caches on one machine on a large-memory x86 box), just add more items to the array. To increase the weight of a server (say, because it has twice the memory of the others and you want to spread usage evenly), make its entry a subarray:

  $wgMemCachedServers = array(
    "127.0.0.1:11000", # one gig on this box
    array("192.168.0.1:11000", 2) # two gigs on the other box
  );

More information in docs/memcached.txt.