There wouldn't have been anything wrong if I had included a security section in every single chapter from part two of this book. But I have decided to create a dedicated chapter on this subject in order to show you a step-by-step process of how to secure the key elements of a microservices-based architecture. The topics related to security are usually more advanced than other topics, so I took a bit more time to explain some of the basic concepts around the field. I have shown you samples illustrating a two-way SSL authentication, encryption/decryption of sensitive data, Spring Security authentication, and OAuth2 authorization with JWT tokens. I will leave it to you to decide which of them should be used in your system architecture to provide your desired level of security.
After reading this chapter, you should be able to set up both the basic and the more advanced security configurations for your application. You should also be able to secure every component of your system's architecture...