Manual:$wgLoggedOutMaxAge

HTTP proxy (CDN) settings: $wgLoggedOutMaxAge
Cache TTL for the user agent sent as max-age, for logged out users.
Introduced in version:1.35.0 (Gerrit change 532378; git #ea9cb5ce)
Removed in version:1.38.0 (Gerrit change 732375; git #76e3701d)
Allowed values:(integer)
Default value:0

Details

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Cache TTL for the user agent sent as max-age, for logged out users. Only applies if $wgUseCdn is false.