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== Expensive parser function calls ==

{{Redirect|WP:EXPENSIVE|the essay "Redirects are costly"|WP:COSTLY}}{{Further|mw:Manual:$wgExpensiveParserFunctionLimit|Template:Expensive}}{{shortcut|WP:EXPENSIVE}}

{{shortcut|WP:EXPENSIVE}}

There is a limit of 500 to the '''expensive parser function count''', i.e., the number of calls of expensive [[:mw:Help:Magic words#Parser functions|parser functions]], which are:

* <code>[[Help:Magic words#Conditional|#ifexist]]<nowiki /code>ifexist: [[Help:Conditional expressions|conditional expression]] –which branchingbranches depending on whether a particulargiven page exists or not. If the limit on thisexpensive counterparser functions is exceeded, every additional <code>#ifexist</code> callscall will actbehave as though the pagesgiven theypage in the query dodoes not exist.

* [[mw:Help:<code>{{Magic words#Statisticsword|PAGESINCATEGORY]]}}</code> or PAGESINCAT: Number of pages in the category named ''categoryname''. Each subcategory is counted as one item.

* [[mw:Help:Magic words#Technical metadata|PAGESIZE]]

* CASCADINGSOURCES