C++ is used to power much of our civilization, but is often unheralded, so people always underestimate how widely it is used. We think many C++ developers like to know about major/cool systems written in C++, so from time to time we'll post an article like this. Enjoy:

Large-scale cluster management at Google with Borg

by Abhishek Verma et al.

From the article:

All components of Borg are written in C++...

A cluster usually hosts one large cell and may have a few smaller-scale test or special-purpose cells. We assiduously avoid any single point of failure. Our median cell size is about 10 k machines after excluding test cells; some are much larger...