On Tue, Apr 21, 2009 at 8:34 PM, Chad <innocentkil...@gmail.com> wrote: > The main issue with the daemon idea (which was discussed at length in > #mediawiki a few weeks ago) is that it requires a major change in how we > handle images. > > Right now, the process involves rendering on-demand, rather than at-leisure. > This has the benefit of always producing an ideal thumb'd image at the end > of every parse. However the major drawbacks are an increase in parsing > time (while we wait for ImageMagik to do its thing) and an increased load on > the app servers. The only time we can sidestep this is if someone uses a > thumb dimension for which we already have a thumb rendered. > > In order for this to work, we'd need to shift to a style of "render when you > get > a chance, but give me the best fit for now." Basically, we'd begin parsing and > find that we need a thumbnailed copy of some image, but we don't have the > ideal size just yet. Instead, we could return the best-fitting thumbnail so > far > and use that until the daemon has given us the right image.
I'm not clear on why we don't just make the daemon synchronously return a result the way ImageMagick effectively does. Given the level of reuse of thumbnails, it seems unlikely that the latency is a significant concern -- virtually no requests will ever actually wait on it. _______________________________________________ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l
