In this chapter, we learned about JVM and its parameters. We learned about memory leaks and common misunderstandings related to GC. We learned about different GC methods and their importance. We learned about import JVM flags, which are tuned to achieve better performance. 

In the next chapter, we will learn about Spring Boot microservices and its performance tuning. Microservice is an architecture of an application with loosely coupled services that implements business capabilities. Spring Boot enables us to build production-ready applications.