Scaling Chubby

This lesson looks at how Chubby scales to serve far more clients than its designers expected. It covers the small set of techniques that keep that traffic away from the master.

Chubby counts clients by process, not by machine. That is why a single Chubby server ends up serving more clients than its designers expected. At Google, one Chubby server has handled more than 90,000 clients at once.

Four techniques reduce how much of that traffic reaches the master:

• **Minimize the request rate