Will memcached improve performance with WP Super Cache already running?
I’m working on a WordPress site that is expected to host up to 1000 concurrent users, so I’m exploring ways to make it run as fast as possible. I’ve heard that memcached helps WordPress sites load faster, but when I read what it does, it seems to have areas of overlap with WP Super Cache, especially if you use it in Expert Mode (where everything is cached in HTML and routed at the .htaccess level, so there are no database queries).
Am I right on this? Or does memcached cover areas where WP Super Cache doesn’t to give performance improvements?