When I was at Google, someone on my team said that when he joined Google pre-IPO 60% of the codebase was written by @JeffDean and @Sanjay_Ghemawat.
That’s the level of legend of these two.
The Friendship That Made Google Huge. Coding together at the same computer, @JeffDean and @Sanjay_Ghemawat changed the course of @Google and the Internet.