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I have deployed my website to a production server… When inspected through firebug i found lot 404 not found errors in my requests…. Mainly from ajax libraries like scriptResource.axd files….
I saw the load time was greater for all the files which was a 404 Not Found…
How expensive is a 404(File Not Found) Error?
Why Timeline is greater for files with status 404 not found…..
A 404 request should not be particularly expensive. However, if the 404s are for static content like stylesheets and images, then the browser would normally cache the result. When a 404 is returned this does not happen and the item is requested time and time again. This can have a big effect on page load times.