https://github.com/blog/1252-how-we-keep-github-fast https://github.com/blog/1252-how-we-keep-github-fast went over a previous iteration, before this was extrac

https://github.com/blog/1252-how-we-keep-github-fast https://github.com/blog/1252-how-we-keep-github-fast went over a previous iteration, before this was extracted to peek.