On 07/12/15 06:29, Bartosz Dziewoński wrote: > To add to what Alex and Florian said, the simple database lookup to > check page existence is not actually that simple. When parsing a page, > the query to determine link color (and to mark links to non-existent, > redirect or disambig pages) is done in batches of 1000 links, after > the whole page has been parsed and we know all the pages it links to. > Special pages that have lists of links use a similar method.
Also, when you make a red link, and then someone creates the page, people expect the link to turn blue straight away. That's implemented using the pagelinks table -- when a page is created, we use pagelinks to find all pages with red links to that page, update all their page_touched fields, and purge them from Varnish, so that all the links will turn blue in under a second. It's possible to do that for interwiki links, but it increases the amount of time it would take to implement such a feature. We currently don't have a way to efficiently find all interwiki links to a page, so one would have to be added. -- Tim Starling _______________________________________________ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l
