In my .htacess I have:
- Code: Select all
Header unset Pragma
Header unset ETag
Header set Cache-Control "public"
Header set Expires "Thu, 15 Apr 2014 20:00:00 GMT"
Header unset Last-Modified
Using Live HTTP Headers in Firefox I can see that there is no ETag and the Expires date shows as 2014. Also, looking at the cache I can confirm the Expires date and that there is no ETag or Server Last Modified date.
Again following the information given at YSlow I was expecting that if I now alter an image without altering its filename no changes would take effect until the Expires date is reached. YSlow points out that “if you use a far future Expires header you have to change the component's filename whenever the component changes”.
However, testing on localhost with XAMPP any change I make to an image is still immediately reflected on the web page if I refresh it.
Is this a local server thing or have I misunderstood how this is intended to work?