On Wed, Mar 4, 2009 at 11:53 AM, David Mintz <vtbludg...@gmail.com> wrote: > > > On Wed, Mar 4, 2009 at 11:34 AM, Brent Baisley <brentt...@gmail.com> wrote: >> >> Use AJAX instead to refresh just the part of the page that needs >> refreshing. If it's a fair chunk of information, you set a "version" >> on the server so the AJAX call just checks the current version vs it's >> version. If it's different, then you refresh the content. If it's not >> different, no need to refresh anything and you only did a light weight >> server call, so you could do it every 15 seconds. > > Forgive me, I don't quite understand *how* you would set the version > information on the server in order to compare. > > The Prototype library has an Ajax periodical updater > (http://prototypejs.org/api/ajax/periodicalUpdater) that takes a "decay" > option which "controls the rate at which the request interval grows when the > response is unchanged." The longer the server data stays unchanged, the less > frequently it fetches. Clever and elegant. Something like that would do > nicely, but I have other reasons for tending to prefer JQuery, which doesn't > seem to have a counterpart. > > <snip/> > > -- > David Mintz > http://davidmintz.org/ > > The subtle source is clear and bright > The tributary streams flow through the darkness > > _______________________________________________ > New York PHP User Group Community Talk Mailing List > http://lists.nyphp.org/mailman/listinfo/talk > > http://www.nyphp.org/show_participation.php >
You could md5 the data returned on the last update. This decay stuff looks cool! -jesse _______________________________________________ New York PHP User Group Community Talk Mailing List http://lists.nyphp.org/mailman/listinfo/talk http://www.nyphp.org/show_participation.php
