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Database settings: $wgExternalLinksDomainGaps
Gaps in the externallinks table for certain domains.
Introduced in version:1.41.0 (Gerrit change 955004; git #f405bbb5)
Removed in version:still in use
Allowed values:(array)
Default value:[]

Defails edit

Gaps in the externallinks table for certain domains.

If you have identified certain domains for which externallinks searches are slow, you can use this setting to make MediaWiki skip large el_id ranges, rather than having the database scan through them fruitlessly.

Each key in the array is a domain name in el_to_domain_index form, e.g. 'https://com.example.'. The value is an array with integer keys and values, where each entry is a range (from => to, both inclusive) of el_id values where this domain is known to have no entries. (Subdomains are included, i.e., configuring an entry here guarantees to MediaWiki that there are no rows where the el_to_domain_index starts with this value.)