Manual:$wgSessionCacheType/ja

詳細
セッション データを格納するキャッシュの種類です.

利用できる種類については  を参照してください.

For proper operation this must be set to a persistent cache, and if there are multiple servers that might serve a single client's requests the cache must be shared by all of them. If  is set to CACHE_ACCEL and this is left at its default CACHE_ANYTHING, the cache used may not meet these requirements. The solution is to set this to an appropriate cache, such as CACHE_DB.