Manual:$wgEnableSidebarCache

From MediaWiki.org

Jump to: navigation, search
Sidebar Cache: $wgEnableSidebarCache
If true, cache the sidebar navigation links.
Introduced in version: 1.6.4 (r13631)
Removed in version: still in use
Allowed values: (boolean)
Default value: false

Other settings: Alphabetical | By Function

[edit] Details

If true, cache the sidebar navigation links.

If on, the sidebar navigation links are cached for users with the current language set. This can save a touch of load on a busy site by shaving off extra message lookups.

However it is also fragile: changing the site configuration, or having a variable $wgArticlePath, can produce broken links that don't update as expected.