Note that Goproxy China has been completely handed over to China's well-trusted cloud service provider Qiniu Cloud today, it's now a business-supported project rather than a personal project, and it has been CDNed.<p>If you live in China or travel to China, then we hope that you'll think of the goproxy.cn in the first place. :-)<p>By the way, the goproxy.cn supports proxying checksum databases (sum.golang.org). So don't worry, you are safe.