Summary

In this chapter, we looked at collaboration among microservices. There are three kinds of microservice collaborations. Command-based collaboration (where one microservice uses an HTTP POST or PUT to make another microservice to perform any action), query-based collaboration (one microservice leverages an HTTP GET to query state of another service), and event-based collaboration (one microservice exposes an event feed to another microservice that can subscribe by polling the feed constantly for any new events). We saw various collaboration techniques, which included the pub-sub pattern and NextGen communication techniques such as gRPC, Thrift, and so on. We saw communication via service bus and saw how to share code among microservices.

In the next chapter, we are going to look into aspects of testing, monitoring, and documentation. We will look into different kinds of tests that we can do and how to write test cases and execute them before releasing them to production. Next we will...