Order Pipeline: Events and Topics

An order pipeline is the sequence of steps that moves an order from checkout to a charged delivery, where each step belongs to one service. Each step leaves records behind. Some are events, facts that the step's owner announces to anyone interested. Others are commands, which ask one named service to do one thing.

The grocery pipeline from Order Pipeline: Requirements and Load writes 46 records for every order, at a design peak of 1,380 records a second