fly-apps/nginx-cluster

A horizontally scalable NGINX caching cluster

nginx-cluster's Issues

We can remove all custom scripts and Dockerfile instructions

We're currently adding scripts to do two things:

• check the mount size and write it to the $CACHE_SIZE variable: this might not be required, NGINX can fill the disk and then manage itself after that. See https://www.nginx.com/blog/nginx-caching-guide/ under max_size.

• periodically resolve the other nodes in the same app, update the nginx.conf and reload NGINX: we can use the DNS resolver and variables to achieve this inside normal NGINX with no extra scripts or reloading. See https://www.nginx.com/blog/dns-service-discovery-nginx-plus/ in the "Setting the Domain Name in a Variable" section.

If we drop the scripts we're maintaining to do this, then we can drop other dependencies and hivemind as well. The repo then becomes the example fly.toml, the example nginx.conf and a Dockerfile that just reads:

FROM nginx
COPY nginx.conf /etc/nginx/nginx.conf

and that's it.