Re: PP8: Asynchronous change notification for HTTP-based resources
Simon Leinen <simon.leinen@switch.ch> Sun, 20 January 2008 18:31 UTC
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To: Rohan Mahy <rohan@ekabal.com>
Subject: Re: PP8: Asynchronous change notification for HTTP-based resources
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From: Simon Leinen <simon.leinen@switch.ch>
In-Reply-To: <C84985D1-E485-4C6B-997D-9D7DB7286F95@osafoundation.org> (Lisa Dusseault's message of "Fri, 18 Jan 2008 11:00:57 -0800")
References: <C84985D1-E485-4C6B-997D-9D7DB7286F95@osafoundation.org>
Date: Sun, 20 Jan 2008 19:31:52 +0100
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> Asynchronous change notification for HTTP-based resources > Rohan Mahy [...] > Current practices in change notification involve polling individual > HTTP resources, or polling some kind of HTTP "catalog" resource to > see what resources have changed. Both of these methods inherently > suck. The "catalog" approach at least substantially reduces the > number of resources that need to be polled, but the amount of time > to wait between polls is always one-sided compromise and rarely > optimal for response time, network usage, and battery life. FYI, there are a few interesting techniques to make server-to-client notifications over HTTP more efficient. The buzzword for this is "Comet", and the Wikipedia article has good descriptions on some of these techniques, e.g. "long polling": http://en.wikipedia.org/wiki/Comet_(programming) -- Simon.
- PP8: Asynchronous change notification for HTTP-ba… Lisa Dusseault
- Re: PP8: Asynchronous change notification for HTT… Simon Leinen
- Re: PP8: Asynchronous change notification for HTT… Peter Saint-Andre