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.
In many cases, you can get away with using timestamps. If you have update_at columns, then you can compare the timestamps. In theory, there are problems with this method (such as updates that happen during the same second), but in practice, it works quite well. _______________________________________________ New York PHP User Group Community Talk Mailing List http://lists.nyphp.org/mailman/listinfo/talk http://www.nyphp.org/show_participation.php
