Is it possible to set Expires caching headers for static content in _layouts
and the Style Library?
Currently, each page request generates about 100 requests for static content like CSS, images and JavaScript, each resulting in a Not Modified response from the server. But these 100 requests are having an impact on the perceived performance of the site.
I have static content deployed to both _layouts
(non-modifiable content) and the Style Library (modifiable content). Some of this content is themes for jQuery components, some is custom JavaScript, some is images used for with CSS.