Rate Limiting Development Tutorials, Guides & Insights

Spam submissions are one of the most common annoyances for web developers. Whether you're dealing with contact forms, login pages, or comment sections—bots will find and abuse them.

In this tutorial, you'll learn real-world, effective anti-spam techniques beyond just slapping on a CAPTCHA. These strategies are easy to implement, and when combined, they make your forms extremely hard to abuse.

Limit the number of simultaneous connections from a single IP address to avoid overload or abuse:

limit_conn_zone $binary_remote_addr zone=addr:10m;
limit_conn addr 5;