Interesting project, that socket.io Sort of like openlayers for updates!
On 5/20/2011 9:16 AM, Wally Atkins wrote:
You might want to check out SocketIO ( http://socket.io/)
On Fri, May 20, 2011 at 10:14 AM, Michael <[email protected]
<mailto:[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
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