I have website built on Codeigniter and on product page which has loads of images etc so I setup htaccess caching as following:
## EXPIRES CACHING ##
<IfModule mod_expires.c>
ExpiresActive On
ExpiresByType image/jpg "access 1 year"
ExpiresByType image/jpeg "access 1 year"
ExpiresByType image/gif "access 1 year"
ExpiresByType image/png "access 1 year"
ExpiresByType text/css "access 1 month"
ExpiresByType text/html "access 1 month"
ExpiresByType application/pdf "access 1 month"
ExpiresByType text/x-javascript "access 1 month"
ExpiresByType application/x-shockwave-flash "access 1 month"
ExpiresByType image/x-icon "access 1 year"
ExpiresDefault "access 1 month"
</IfModule>
## EXPIRES CACHING ##
<IfModule mod_deflate.c>
However issue is when customer go through the check out process and place order I am using codeigniter sess_destroy to destroy use session. However when I go back to product URL it shows there is items in cart. When I click to check out again. I have nothing in my cart which means codeigniter did destroy the session.
How to resolve this? Please help