RAFT for database consensus at scale

One of the most difficult problems in distributed computing is consensus, getting participants to a distributed computation to agree. RAFT is a distributed consensus algorithm built around the simple property that no group can simultaneously have two simple majorities.

Join me in learning about RAFT, how it can be used to build databases, and the decision decisions we made when scaling WARaft, WhatsApp's implementation of RAFT in Erlang, to support a message database for 2B+ users.