Manual:$wgInvalidateCacheOnLocalSettingsChange

Cache: $wgInvalidateCacheOnLocalSettingsChange
Setting this to true will invalidate all cached pages whenever LocalSettings.php is changed
Introduced in version:	1.17.0 (r77878)
Removed in version:	still in use
Allowed values:	Boolean
Default value:	true

Other settings: Alphabetical | By Function

Setting this to true will invalidate all cached pages whenever LocalSettings.php is changed. This is useful so that if you install a new extension, any old pages that were cached before the extension was installed are re-rendered.

On high-traffic wikis, this should be set to false, to avoid the need to check the file modification time, and to avoid the performance impact of unnecessary cache invalidations.

Note: In older versions of MediaWiki, this was done by default in LocalSettings.php using code like $wgCacheEpoch = max( $wgCacheEpoch, gmdate( 'YmdHis', @filemtime( __FILE__ ) ) );

See also

• Manual:$wgCacheEpoch

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