Manual:$wgCdnMaxageSubstitute

HTTP proxy (CDN) settings: $wgCdnMaxageSubstitute
Cache timeout for the CDN when a response is known to be wrong or incomplete (due to load)
Introduced in version:1.27.0 (Gerrit change 252895; git #01c2b0a4)
Removed in version:still in use
Allowed values:(integer)
Default value:0

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