Book Image

Hands-On Swift 5 Microservices Development

Book Image

Hands-On Swift 5 Microservices Development

Overview of this book

The capabilities of the Swift programming language are extended to server-side development using popular frameworks such as Vapor. This enables Swift programmers to implement the microservices approach to design scalable and easy-to-maintain architecture for iOS, macOS, iPadOS, and watchOS applications. This book is a complete guide to building microservices for iOS applications. You’ll start by examining Swift and Vapor as backend technologies and compare them to their alternatives. The book then covers the concept of microservices to help you get started with developing your first microservice. Throughout this book, you’ll work on a case study of writing an e-commerce backend as a microservice application. You’ll understand each microservice as it is broken down into details and written out as code throughout the book. You’ll also become familiar with various aspects of server-side development such as scalability, database options, and information flow for microservices that are unwrapped in the process. As you advance, you’ll get to grips with microservices testing and see how it is different from testing a monolith application. Along the way, you’ll explore tools such as Docker, Postman, and Amazon Web Services. By the end of the book, you’ll be able to build a ready-to-deploy application that can be used as a base for future applications.
Table of Contents (19 chapters)

Starting the service

You've made it! We now need to compile the service and start it. To do that, run the following commands:

  1. Run swift build .
  2. Run ./.build/debug/Run.

If you run into any problems after running swift build, you should check the following:

  • Did you make any little spelling mistakes? As you know, Swift doesn't forgive those.
  • Is Swift able to pull all the correct dependencies?

Otherwise, if you run the second command and the service quits very quickly, be sure to check the following:

  • The credentials are correctly in the environment. See in the preceding sections for how to do that.
  • The database server is reachable and configured.

If you have any doubts about working through this chapter, you might want to check out the code on GitHub and compare it.

Excellent! We have written, compiled, and started our first service for the example case! Now, let...