Book Image

Microservices Development Cookbook

By : Paul Osman
Book Image

Microservices Development Cookbook

By: Paul Osman

Overview of this book

Microservices have become a popular choice for building distributed systems that power modern web and mobile apps. They enable you to deploy apps as a suite of independently deployable, modular, and scalable services. With over 70 practical, self-contained tutorials, the book examines common pain points during development and best practices for creating distributed microservices. Each recipe addresses a specific problem and offers a proven, best-practice solution with insights into how it works, so you can copy the code and configuration files and modify them for your own needs. You’ll start by understanding microservice architecture. Next, you'll learn to transition from a traditional monolithic app to a suite of small services that interact to ensure your client apps are running seamlessly. The book will then guide you through the patterns you can use to organize services, so you can optimize request handling and processing. In addition this, you’ll understand how to handle service-to-service interactions. As you progress, you’ll get up to speed with securing microservices and adding monitoring to debug problems. Finally, you’ll cover fault-tolerance and reliability patterns that help you use microservices to isolate failures in your apps. By the end of this book, you’ll have the skills you need to work with a team to break a large, monolithic codebase into independently deployable and scalable microservices.
Table of Contents (16 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
Index

Using gRPC


gRPC is an RPC framework originally invented at Google. Unlike Thrift, gRPC makes use of existing technologies, specifically protocol buffers, for its IDL and HTTP/2 for its transport layer. After having completed the previous recipe, aspects of gRPC will feel similar to aspects of Thrift. Instead of the Thrift IDL, types and services are defined in a .proto file. The .proto file can then be used to generate code using the protocol buffer's compiler. 

How to do it...

  1. Create a new Gradle/Java project with the following build.gradle file. Of note here is that we're installing and configuring the protobuf Gradle plugin, which will allow us to generate code from protobuf files using Gradle, and we're listing the required protobuf libraries as dependencies. Finally, we have to tell our IDE where to look for generated classes:
group 'com.packtpub.microservices'
version '1.0-SNAPSHOT'

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com...