What Causes HTTP 499 Errors and How Can You Fix Them? or HTTP 499 - Client Closed Request: Why Does I

I’ve battled http 499 errors before! In my case, it was a mix of slow backend responses and aggressive ad blockers killing requests.

Tools like Lighthouse or GTmetrix can help identify frontend issues. On the server side, maybe bump up `keepalive_timeout` in Nginx if clients are dropping too fast.

Also, could be worth logging user agents—maybe some bots or crawlers are causing noise.