This chapter started with insightful details on Spring Boot, Spring Cloud, microservices, and all of these together. We covered the details of Spring Initializr, Spring Boot starter projects, and learned how to create our first Spring Boot application. Then, we learned about the Spring Boot Actuator and the production-grade features provided by the Actuator. The details on the application health checks and endpoints are important for production-ready applications.

Later in the chapter, we migrated to the world of microservices. We learned how Spring Boot can leverage features for the benefit of building microservices. We developed a microservice with Spring Boot and Spring Cloud with support for externalized configurations. We also looked at the integration of the Spring Boot admin for monitoring Spring Boot applications. Last but not least, we learned a few techniques to improve the performance of Spring Boot applications. Pretty huge stuff, isn't it?

At this point, you have a very good understanding of performance assessment and performance tuning for Spring and, in essence, any Java-based web application. This is all for the scope of this book. A step forward, you can learn the JVM class-loading mechanism, Spring Batch framework, design patterns for microservices, microservices deployment, and Infrastructure as a Service (IaaS). We hope you will find these helpful.