NGINX Rate Limit, Burst and nodelay

nginx-rate-limit.conf

## https://nginx.org/en/docs/http/ngx_http_limit_req_module.html
## https://www.nginx.com/blog/rate-limiting-nginx
## Ref. https://github.com/sportebois/nginx-rate-limit-sandbox


limit_req_zone $request_uri zone=by_uri:10m rate=30r/m;
limit_req_zone $binary_remote_addr zone=by_ip:10m rate=30r/m;

server {
    listen 80;

    location /by-uri/burst0 {
        limit_req zone=by_uri;
        try_files $uri /index.html;
    }

    location /by-uri/burst0_nodelay {
        limit_req zone=by_uri nodelay;
        try_files $uri /index.html;
    }

    location /by-uri/burst5 {
        limit_req zone=by_uri burst=5;
        try_files $uri /index.html;
    }

    location /by-uri/burst5_nodelay {
        limit_req zone=by_uri burst=5 nodelay;
        try_files $uri /index.html;
    }

    # Same logic, but in the other rate-rimit zone

    location /by-ip/burst0 {
        limit_req zone=by_ip;
        try_files $uri /index.html;
    }

    location /by-ip/burst0_nodelay {
        limit_req zone=by_ip nodelay;
        try_files $uri /index.html;
    }

    location /by-ip/burst5 {
        limit_req zone=by_ip burst=5;
        try_files $uri /index.html;
    }

    location /by-ip/burst5_nodelay {
        limit_req zone=by_ip burst=5 nodelay;
        try_files $uri /index.html;
    }
}