Chapter 1, Introduction to Microservices, introduces the term microservices and what we mean by it. It sheds light on the problems faced with monoliths and how Microservices architecture helps us solve those problems gracefully.
Chapter 2, Introduction to Play Framework, provides a brief overview of the Play Framework. We will also look at Play-related elements such as Guice and Play-JSON.
Chapter 3, Asynchronous and Non-Blocking, thoroughly discusses the importance of being asynchronous and how the Play Framework leverages this paradigm for scalability and high performance. You will learn about the Scala Future API and Work Stealing in Play.
Chapter 4, Dive Deeper, demonstrates how to build a sample search engine to screen developers. This is built in a microservices-based architecture using the Play Framework. In the process, we also become aware of the problems faced in building microservices.
Chapter 5, Reactive Manifesto, introduces the Reactive Manifesto. You will learn about the different guidelines provided by the manifesto to build responsive applications that are resilient to failures.
Chapter 6, Introduction to Lagom, provides an overview of the Lagom Framework and how it handles problems usually faced in the Microservices-based architecture. We will explore Lagom Service API in this chapter.
Chapter 7, CQRS and Event Sourcing, explains Event Sourcing and CQRS and the advantages they provide in the scenarios they best fit in. We will adapt this paradigm in an example using the Lagom Persistence API.
Chapter 8, Effective Communication, explains the importance of asynchronous communication using message passing in building robust Microservices. It introduces Apache Kafka as a broker, and we will explore the Lagom Message API as a means for message passing.
Chapter 9, Development Process, talks about a scalable development model to build microservices using code versioning, continuous integration, and testing. It talks about the basics of docker containers and images.
Chapter 10, Production Containers, looks into server automation, deploying, and managing containers on production systems. It also delves deep into a popular container orchestrator called Kubernetes its internals, monitoring, and security.
Chapter 11, Example Application in K8s, helps dockerize all the services from our example application from Chapter 4, Dive Deeper. Using Kubernetes, it will deploy our application microservices with load-balancing and service discovery features.