I know just a little about caching, but enough. FastCGI is a page cache mechanism, while Redis caches for example DB queries.
While looking at the settings of NGINX helper, I can however only select FastCGI or Redis. Does this mean that the purge cache button only works for one of the two caches ?
Do I have to go into the Redis plugin cache settings to purge Redis if I have Nginx helper set to fastcgi ?