Stop browser to make HTTP requests for images that should stay cached - mod_expires

Question

After reading many articles and some questions on here, I finally succeded in activating the Apache mod_expires to tell the browser it MUST cache images

Answer 1

This question has a better answer here at webmasters stack-exchange site.

More information, which is also cited in the above link, is on httpwatch

According to the article:

There are a number of situations in which Internet Explorer needs to check whether a cached entry is valid:

• The cached entry has no expiration date and the content is being accessed for the first time in a browser session
• The cached entry has an expiration date but it has expired

• The user has requested a page update by clicking the Refresh button or pressing F5

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