key: $wgDBname:messages, $wgDBname:messages-hash, $wgDBname:messages-status
ex: wikidb:messages, wikidb:messages-hash, wikidb:messages-status
stores: an array where the keys are DB keys and the values are messages
- set in: wfMsg(), Article::editUpdates() both call wfLoadAllMessages()
+ set in: wfMessage(), Article::editUpdates() and Title::moveTo()
expriy: $wgMsgCacheExpiry
cleared by: nothing
$hash: hash of user options applied to the page, see ParserOptions::optionsHash()
ex: wikidb:pcache:idhash:1-0!1!0!!en!2
stores: ParserOutput object
- modified by: Article::editUpdates() or Article::getOutputFromWikitext()
+ modified by: WikiPage::doEditUpdates() or PoolWorkArticleView::doWork()
expiry: $wgParserCacheExpireTime or less if it contains short lived functions
key: $wgDBname:pcache:idoptions:$pageid