Traffic Advice configuration for Nginx
If you have been seeing 404s for /.well-known/traffic-advice in your access logs from the Chrome Privacy Preserving Prefetch Proxy bot, you’re not alone. It’s Google Chrome’s private prefetch proxy intended to decrease the Largest Contentful Paint (LCP) performance metric for faster perceived page loads. There are a few guides (including the first answer on the Stack Overflow question I linked earlier) to have your web server respond correctly to these requests.