Re:Roadmap – nginx
by zaph0d on Tuesday May 15, 2012 @08:50AM
(#3976287)
I am more excited about ETags support than SPDY & Websockets. Etags (when used correctly) are extremely handy.
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Please elaborate...
There's a great example/explanation on the Facebook Developer blog:
https://developers.facebook.com/blog/post/627/
Basically, it's Last-Modified on steroids.
In the link that you mentioned, ETags are produced and handled by application. There are no special needs in web-server support.
Right... I was assuming that the OP wanted to know what ETags are, rather than their specific implementation in nginx.