Hello, currently is possibile to flush the entire page cache of a website through api os server panel. I'd like to have the ability to delete pages by url.

Nginx uses a predictable algoritm to store cached files, it uses md5 and zones.

To allow flushing cache there are basically 2 ways:

• use nginx-cache-purge module: this module is not part of the official Nginx repo and requires manual compilation of the module everytime Nginx changes. Alternatives are Nginx Plus ($$$) or usage of an unofficial Nginx repo.
• custom script that purge caches: this script must be able to CRUD /etc/nginx/cache folder, and it must be protected given that it would run as privileged ploi user. The advantage of this solution is that it doesn't require Nginx modules.
• ploi daemon: this is quite the same of #2 but better from a security pov. You create a daemon listing on its own port and this daemon is reachable only from localhost.

I imagine as MVP a php script app behind a php-fpm process that listen to a specific port and optionally allow only local connections. This script will run runs as ploi user to delete only the intended files. The script can calculate the cached file name because name of the cached files are predictable thanks to fastcgi_cache_path and fastcgi_cache_key . Nginx calculates md5 of the fastcgi_cache_key and uses the first and last letter of the md5 to define folder to use.