Jatin Puri - Scala Microservices

BIRMINGHAM - MUMBAI

Copyright 2017 Packt Publishing

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First published: September 2017

Production reference: 1150917

ISBN 978-1-78646-934-2

www.packtpub.com

Jatin Puri is a passionate engineer and programming language enthusiast. He holds a master's degree in mathematics. He is a Lightbend-certified Scala trainer and is involved with spreading goodness of Scala through Hyderabad Scala Meetup, Stack Overflow, training workshops, and open source contributions.
When he is not programming, he teaches meditation and stress elimination techniques under the aegis of The Art of Living foundation.

Selvam Palanimalai is a Production Engineer currently working in data pipeline automation using Kubernetes and Spark in downtown Toronto. He is passionate about technology-driven problem solving, clean data, and merciless automation. He is active in the open source community on GitHub, contributing to the Statistical group (SOCR) at the University of Michigan, Ann Arbor.

Mark Elston has been a software developer for 30+ years and has developed software in a wide number of fields, including Systems Simulation, Embedded Hardware Control Systems, Desktop Applications, and Tester Operating Systems for Semiconductor Test systems. He has been with Advantest America for 20+ years as a software engineer and a software architect.

Advantest, his current employer, produces a wide variety of test equipment for the semiconductor industry.

He has also reviewed the book Mastering Android Wear Application Development by Packt.

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Microservices is an architectural style and pattern that is becoming very popular and adopted by many organizations because of the advantages that it offers. In this book, you will learn what it takes to build great applications using microservices, the pitfalls associated with such a design, and the techniques to avoid them.

We will start by shedding light on traditional monoliths, and the problems faced in such architectures and how microservices are an obvious evolution to tackle such problems. We will then learn to build performant web-services using Play Framework. You will understand the importance of writing code that is asynchronous and non-blocking and how Play leverages this paradigm internally for a higher throughput.

Next, you will learn about the Reactive Manifesto and understand its practical benefits by leveraging it in your design. We will introduce the Lagom Framework, which serves two purposes: building reactive applications that are scalable and resilient to failures, and solving the problems associated with microservices architecture, such as service gateway, service discovery, inter-microservice communication and streaming, and so on. Message passing is used as a means to achieve resilience, and CQRS with Event Sourcing helps us model data for highly interactive applications.