Andrew Hudson on "WP Super Cache regenerating pages on every reload"

Hi. Thanks for making this plugin.

Every time I reload my page, WP Super Cache regenerates the page. Some of my pages take a long time to generate (e.g. 10 seconds, as the PHP code is getting data from Wikipedia and other sites) so regenerating pages defeats the purpose of having a cache.

A sample notation is:
<!-- Dynamic page generated in 4.670 seconds. -->
<!-- Cached page generated by WP-Super-Cache on 2013-12-05 18:02:17 -->
<!-- Compression = gzip -->
( From the page http://photosecrets.com/paris )

Settings include:
Cache hits to this website for quick access. (Recommended)
Use mod_rewrite to serve cache files. (Recommended)
Make known users anonymous so they’re served supercached static files.
Cache rebuild.
Preload mode

Thanks in advance for your help,
Andrew

http://wordpress.org/plugins/wp-super-cache/