this post was submitted on 21 Mar 2025
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Surprised at the level of negativity here. Having had my sites repeatedly DDOSed offline by Claudebot and others scraping the same damned thing over and over again, thousands of times a second, I welcome any measures to help.
I think the negativity is around the unfortunate fact that solutions like this shouldn't be necessary.
Modify your Nginx (or whatever web server you use) config to rate limit requests to dynamic pages, and cache them. For Nginx, you'd use either fastcgi_cache or proxy_cache depending on how the site is configured. Even if the pages change a lot, a cache with a short TTL (say 1 minute) can still help reduce load quite a bit while not letting them get too outdated.
Static content (and cached content) shouldn't cause issues even if requested thousands of times per second. Following best practices like pre-compressing content using gzip, Brotli, and zstd helps a lot, too :)
Of course, this advice is just for "unintentional" DDoS attacks, not intentionally malicious ones. Those are often much larger and need different protection - often some protection on the network or load balancer before it even hits the server.