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POIIS 7.5 remove etag headers from response
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  1. POIIS 7.5 remove etag headers from response
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    copied!<p>I know this question has been asked alot of times, however most of them were in 2009-2010.</p> <p>I am pretty sure a while back a project I was working on removed them, however I cannot find any way to remove them at the moment.</p> <p>So has there been any advances in this field? It seems crazy that microsoft has made IIS to not be able to easily configure these headers.</p> <p>Currently have tried:</p> <ul> <li>Adding a blank etag header to the web.config</li> <li>Adding an etag with quotes inside to the web.config</li> <li>Adding a blank etag header directly through IIS</li> <li>Adding a custom module which removes an etag on BeginResponse</li> <li>Same as above but for EndResponse</li> <li>Same as both above but instead of removing an etag, make it empty</li> </ul> <p>I hear there is an ISAPI filter you can get to remove them, but I cannot find it anywhere, and have no experience in writing one from scratch but may end up being the only way to do it.</p> <p>Just so there is some reason why I want to remove Etags for everything. I let the clients cache everything (expires &amp; last-modified) so once my static files are gotten from the server it never needs to query the server again until it expires. As if you use Etags you still need to make a request to the server for each file to find out if the tag still matches. So using the client cache you only make requests for the content you need. </p> <p>I also have a versioning system in place so when a change happens the static content is then referenced as <strong>my.js?12345</strong> rather than <strong>my.js?12344</strong>. Anyway the point is I currently believe removing Etags will greatly improve one of the bottlenecks on my current project.</p>
 

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