Sessions and Events

We have seen how Chubby locks work. Now we look at the session that ties a client's locks and data together, and the events Chubby uses to keep it informed.

What is a Chubby session?

A Chubby session is a relationship between a Chubby cell and a Chubby client. It stays alive over time, kept going by periodic handshakes called KeepAlives. A client's handles, locks, and cached data stay valid only as long as its session does. A handle is the client's open reference to a Chubby node.

Session protocol

A client asks for a new session the first time it contacts the cell's master