static images aren't caching with php-generated page
- by scootklein
Our website was just converted to being generated by mod_rewrite and php scripts. Images aren't caching in browsers when they seemingly should be.
All images follow format:
<img src="/images/header.png" />
I must avoid the script completely caching because the PHP parser needs to handle each page dynamically on each request; however, the download overhead of the large images is cumbersome on every single page load.
I would ideally provide headers for "Cache-Control: no-cache, must-revalidate" and "Expires: some_date_in_the_past" to force revalidation of the PHP script.
Why isn't the browser caching static images with consistent href values across all pages?
