Book Image

Mastering Microservices with Java 9 - Second Edition

Book Image

Mastering Microservices with Java 9 - Second Edition

Overview of this book

Microservices are the next big thing in designing scalable, easy-to-maintain applications. They not only make app development easier, but also offer great flexibility to utilize various resources optimally. If you want to build an enterprise-ready implementation of the microservices architecture, then this is the book for you! Starting off by understanding the core concepts and framework, you will then focus on the high-level design of large software projects. You will gradually move on to setting up the development environment and configuring it before implementing continuous integration to deploy your microservice architecture. Using Spring security, you will secure microservices and test them effectively using REST Java clients and other tools like RxJava 2.0. We'll show you the best patterns, practices and common principles of microservice design and you'll learn to troubleshoot and debug the issues faced during development. We'll show you how to design and implement reactive microservices. Finally, we’ll show you how to migrate a monolithic application to microservices based application. By the end of the book, you will know how to build smaller, lighter, and faster services that can be implemented easily in a production environment.
Table of Contents (12 chapters)

Logging and the ELK stack

Can you imagine debugging any issue without seeing a log on the production system? Simply, no, as it would be difficult to go back in time. Therefore, we need logging. Logs also give us warning signals about the system if they are designed and coded that way. Logging and log analysis is an important step for troubleshooting any issue, and also for throughput, capacity, and monitoring the health of the system. Therefore, having a very good logging platform and strategy will enable effective debugging. Logging is one of the most important key components of software development in the initial days.

Microservices are generally deployed using image containers such as Docker that provide the log with commands that help you to read logs of services deployed inside the containers. Docker and Docker Compose provide commands to stream the log output of running...