Google has been DDoSing Sourcehut for over a year
Athens, a self-hosted free Go proxy implementation, implements rate-limiting for GitHub (with a pretty horrific Github-specific behavior). This means GitHub does implement rate-limiting to cope with aggressive Go proxies.<p><a href="https://github.com/gomods/athens/blob/723c06bd8c13cc7bd238e650a559258ff7e23142/pkg/module/go_get_fetcher.go#L145-L148" rel="nofollow">https://github.com/gomods/athens/blob/723c06bd8c13cc7bd238e6...</a><p>Food for thoughts.