Kotlin Design Patterns and Best Practices

Improve the scalability and maintainability of your applications by implementing both classical and modern design patterns using Kotlin

Key Features

• Understand traditional and modern design patterns to improve the design of your application
• Combine the benefits of object-oriented, functional, reactive, and concurrent programming
• Choose the best microservices architecture and frameworks for your web application

Book Description

Design patterns are well-known solutions to common architectural problems as they allow you to solve many problems efficiently and create a shared vocabulary between developers. Kotlin is a modern multi-paradigm programming language, and this book shows you how traditional design patterns can be implemented in it, along with the new patterns and paradigms that have emerged since Kotlin was conceived 10 years ago.

You'll begin by learning about the practical aspects of smarter coding in Kotlin, and understand basic Kotlin syntax and the impact of design patterns. This second edition is updated with changes introduced from Kotlin 1.2 up to 1.5, and focuses more on the idiomatic usage of coroutines, which have become a stable language feature. The book also provides an in-depth explanation of the classic design patterns, such as creational, structural, and behavioral families, before moving on to functional programming. You'll go through reactive and concurrent patterns, and finally get to grips with coroutines and structured concurrency to write better code.

By the end of this Kotlin book, you'll have explored the latest trends in architecture and design patterns for microservices, as well as understood the considerations when choosing between different architectures, such as reactive and concurrent design approaches to microservices.

What you will learn

• Implement all the classical design patterns using the Kotlin programming language
• Apply reactive and concurrent design patterns to make your application more scalable
• Discover best practices in Kotlin and explore its new features
• Understand the key principles of functional programming and learn how they apply to Kotlin
• Find out how to write idiomatic Kotlin code and know which patterns to avoid
• Harness the power of Kotlin to design concurrent and reliable systems with ease
• Create an effective microservice with Kotlin and the Ktor framework

Who This Book Is For

This book is for developers looking to learn how to apply design patterns they've learnt from other languages in Kotlin to build reliable, scalable, and maintainable applications. Prior programming knowledge is necessary to get started with this book. Experience in Java or design patterns is helpful, but not mandatory.

Table of Contents

1. Getting Started with Kotlin
2. Working with Creational Patterns
3. Structural Patterns
4. Getting Familiar with Behavioral Patterns
5. Introducing Functional Programming
6. Threads and Coroutines
7. Controlling the Data Flow
8. Designing for Concurrency
9. Idioms and Anti-Patterns
10. Concurrent Microservices with Ktor
11. Reactive Microservices with Vert.x