Many people have said that yes, but not many people showing us just how to do it.
I’m using DBCR (ver 2.2.4) with WP 3.2.1 and WPSC 0.9.9.9 and I can’t tell if it’s working.
In WPSC settings I have “Don’t cache pages for known users. (Recommended)” checked.
When I am logged in, WP Super Cache turns off and I can see DB-C-R entries in the footer source:
<!-- Generated in 0.313 seconds. Made 11 queries to database and 22 cached queries. Memory used - 20.59MB -->
<!-- Cached by DB Cache Reloaded Fix -->
<!-- Dynamic page generated in 0.310 seconds. -->
<!-- Page not cached by WP Super Cache. Check your settings page. -->
But when I log out to test out WPSC, I only see the entry for WPSC:
<!-- Cached page generated by WP-Super-Cache on 2011-11-29 21:10:58 -->
<!-- Compression = gzip -->
So I have to assume DBCR isn’t operating at the same time as WPSC (I’d love to hear otherwise). It’s still partially useful because it will cache when WPSC isn’t.
DBCRF will work on caching the database query before the wpsc do cache the page. so i think dbcrf and wpsc could work together.
Cheers
Ivan