Manual:$wgDBAhandler

Cache: $wgDBAhandler
Selects which DBA handler
Introduced in version:1.16.0 (r59748)
Removed in version:1.23.0 (Gerrit change 107891; git #736820f8)
Allowed values:(string)
Default value:'db3'

Details

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When using CACHE_DBA as your $wgMainCacheType , this allows you to select which handler is used.