nginx.conf.tmpl

events {}
http {
    # Define the cache path and parameters
    proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=my_cache:${IN_RAM_SIZE} max_size=${MAX_CACHE_SIZE} inactive=${CACHE_DURATION} use_temp_path=off;

    # Define the backend server
    upstream backend_server {
        server ${UPSTREAM_DOMAIN}:${UPSTREAM_PORT};
    }

    # Main server block
    server {
        listen 80;
        server_name _;

        # Define the cache zone
        proxy_cache my_cache;
        proxy_cache_valid any ${CACHE_DURATION};

        location / {
            # Proxy pass to the backend server
            proxy_pass ${UPSTREAM_PROTOCOL}://backend_server;
            # Additional cache settings
            proxy_cache_use_stale error timeout updating http_500 http_502 http_503 http_504;
            proxy_cache_lock on;

            # Cache control headers
            add_header X-Cache-Status ${DOLLAR}upstream_cache_status;
            proxy_set_header Host "${UPSTREAM_HOST_HEADER}";
        }
    }
}