I changed out our software over the last few days. Went from Apache to Varnish + Nginx + PHP-FPM with APC and Memcache. The performance difference is insane!
But... new posts or changes to existing posts are not being reflected on the main page. If I make a change to a post, it appears that the post itself gets purged, but not the front page.
I have "Enable varnish cache purging" checked, and the IP address of the varnish server entered. And like I said, the post itself seems to get purged.
Anyone else run across this?