I have an image on my site which is rather big (about 200kb). I have no plans to change it in near future. How can I tell browsers to cache it?
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I have an image on my site which is rather big (about 200kb). I have no plans to change it in near future. How can I tell browsers to cache it?
Setting correct headers helps you a lot.
Expires: Thu, 15 Apr 2012 20:00:00 GMT
Setting this header tells the browser when to refresh this resource. See http://www.web-caching.com/mnot_tutorial/how.html for more information.
ETag: “10c24bc-4ab-457e1c1f”
The ETag is sent to the server, on second visit. If it still has the same, it sends a 304 – not modified.
See http://developer.yahoo.com/performance/rules.html for more information, Chapter Configure ETags