Which of the preference settings are likely to cause this problem? On Fri, Jul 30, 2010 at 12:18 PM, Aryeh Gregor <[email protected]> wrote: > On Fri, Jul 30, 2010 at 4:13 AM, Domas Mituzas <[email protected]> wrote: >> So, we may have 1000x slower performance for our users because they don't >> really know about our caching internals. >> Our only hope is that most of them are also ignorant that those settings >> exist ;-) >> >> There'd be of course another workaround - precaching objects for every >> variation, at extremely high cost for relatively low impact. >> Alternative is either having warning icon whenever people are in slow-perf >> mode that they'd be able to hide, or eliminating the choice (you know, the >> killing features business, that quite often works really well!!! ;-) > > Or we could just store an intermediate form in the parser cache, and > apply the settings afterwards. For instance, one preference is > "enable section edit links". If instead of outputting HTML, the > parser stuck a string like "\001SECTIONEDIT1\001" where the first > section edit link goes, we could do preg_replace($page, > '/\001SECTIONEDIT(\d+)\001/", $replacement), where $replacement = > 'blah blah blah $1 blah blah blah' or '' according to user preference. > Then we could use the same parser cache for everyone. I think almost > all if not all the parser-changing prefs could be implemented this > way, preg_replace_callback() at worst. > > So we don't have to remove features, probably. In fact, we can even > add features, like {{USERNAME}}. It wouldn't work for > {{#ifeq:{{USERNAME}}|Simetrical|You're awesome!|}} or anything, but > fine for "Hello, {{USERNAME}}, welcome to Wikipedia!" As long as we > keep it down to preg_replace(), or better yet require it to be one big > single-pass strtr() for all such settings, it should have no > noticeable performance impact even if we add lots and lots of features > like this. > > _______________________________________________ > Wikitech-l mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/wikitech-l >
-- David Goodman, Ph.D, M.L.S. http://en.wikipedia.org/wiki/User_talk:DGG _______________________________________________ Wikitech-l mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikitech-l
