You might want to check out SocketIO (http://socket.io/)
On Fri, May 20, 2011 at 10:14 AM, Michael <[email protected]> wrote: > Greetings Mappers! > > I've built a trans-pacific charting application intended to be used for > near real-time sailboat tracking. > > I want to update positions without users having to press "refresh." While > a loop fetching data and updating works for that purpose, we expect, from > prior experience, around 90k viewers a day during the actual race (July > 2012). Data will consist of around 70 new points, plus some social > networking links, per hour. > > It seems that the "long polling" method or, worse, looped queries, can lead > to server overload. Web searches keep leading me to Comet and Ape, but it > seems that nobody has done any work on these since 2009. > > Can someone in the community enlighten me on what the best thinking is for > updating the data on the clients efficiently? Has the field been taken over > by mixed commercial enterprises like Lightstreamer? I'd sure like to stay > 100% open source. > > Michael > > p.s: Simulation at http://pacificcup.org/OpenLayers/trackup.php > A server is set to trickle data out every minute or so. You'll need to > pick the boat from the menu at the left. > > m > > > _______________________________________________ > Users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/openlayers-users >
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