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Our startup (http://feedity.com http://feedity.com) delivers custom RSS feeds, and while working on a similar mechanism, we kept it relatively simple by perform
by nreece 18y ago
Our startup (http://feedity.com http://feedity.com) delivers custom RSS feeds, and while working on a similar mechanism, we kept it relatively simple by performing a 'Conditional Get' before any content (HTML or RSS) is even fetched. Checking the 'Last-Modified' date, 'If-Modified-Since' date-time, and ETag HTTP header values for the source content, or the published data (meta data) if the HTTP header values are missing.
This makes for a simple and efficient solution, without over-hitting the resources.
- paul 18y agoThe problem is that you still need to poll every single feed. SUP allows you to instead poll a single url. See the "update" note at the bottom of http://blog.friendfeed.com/2008/08/simple-update-protocol-fetch-updates.html http://blog.friendfeed.com/2008/08/simple-update-protocol-fe... for more details.
- ntoshev 18y agoWhat is the level of support of conditional get for blogs and RSS readers? I always assumed most readers would do conditional gets and most refined services (like blogger.com) would implement that too, since it is saving them bandwidth. It is just implementing http properly and being a good netizen - like actually sending an identifiable user agent and following robots.txt. BTW, feedity.com's homepage renders badly on my Firefox 3.0.1/WinXP