You can now manage all Moodle caches from Cache Administration navigation:
Or simply append
/cache/admin.php to your base URL.
This page is very handy if you are using a separate caching system like Memcache(d) or Redis.
You can also purge, file, static request and sessions caches here, and look at all the known cache definitions.
For lots more information about how this all works, see the Caching documentation page.