nginx.conf

user www-data;
worker_processes auto;
pid /run/nginx.pid;

events {
	worker_connections 768;
	# multi_accept on;
}

http {
gzip off;

  # need to setup external DNS resolver
  resolver 8.8.8.8;
  resolver_timeout 5s;

  # configure cache directory with 750G and holding old objects for max 30 days
  proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=default:75m max_size=100m inactive=30d;

  server {
    listen public_ip:8080 default_server;

    keepalive_timeout 3600;

    location / {
      proxy_http_version 1.1;

      # Make sure we're proxying along the correct headers
      proxy_set_header Host [bucket_name].s3.eu-west-2.amazonaws.com;
      # Make sure we're using Keep-Alives with S3
      proxy_set_header Connection '';

      # Configure out caches
      proxy_cache default;
      # Cache all 200 OK's for 30 days
      proxy_cache_valid 200 30d;
      # Use stale cache file in all errors from upstream if we can
      proxy_cache_use_stale error timeout invalid_header updating http_500 http_502 http_503 http_504;
      # Lock the cache so that only one request can populate it at a time
      proxy_cache_lock on;

      # Set back a nice HTTP Header to indicate what the cache status was
      add_header X-Cache-Status $upstream_cache_status always;

      # Set this to a variable instead of using an `upstream`
      # to coerce nginx into resolving as DNS instead of caching
      # it once on process boot and never updating.
      set $s3_host '[bucket_name].s3.eu-west-2.amazonaws.com';
      proxy_pass https://$s3_host;
    }
  }
}