linkcache.txt

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linkcache.txt

The LinkCache class maintains a list of article titles and
the information about whether or not the article exists in
the database. This is used to mark up links when displaying
a page. If the same link appears more than once on any page,
then it only has to be looked up once. In most cases, link
lookups are done in batches with the LinkBatch class, or the
equivalent in Parser::replaceLinkHolders(), so the link
cache is mostly useful for short snippets of parsed text
(such as the site notice), and for links in the navigation
areas of the skin. 

The link cache was formerly used to track links used in a
document for the purposes of updating the link tables. This
application is now deprecated.