Book Image

Redis 4.x Cookbook

Book Image

Redis 4.x Cookbook

Overview of this book

Redis is considered the world's most popular key-value store database. Its versatility and the wide variety of use cases it enables have made it a popular choice of database for many enterprises. Based on the latest version of Redis, this book provides both step-by-step recipes and relevant the background information required to utilize its features to the fullest. It covers everything from a basic understanding of Redis data types to advanced aspects of Redis high availability, clustering, administration, and troubleshooting. This book will be your great companion to master all aspects of Redis. The book starts off by installing and configuring Redis for you to get started with ease. Moving on, all the data types and features of Redis are introduced in detail. Next, you will learn how to develop applications with Redis in Java, Python, and the Spring Boot web framework. You will also learn replication tasks, which will help you to troubleshoot replication issues. Furthermore, you will learn the steps that need to be undertaken to ensure high availability on your cluster and during production deployment. Toward the end of the book, you will learn the topmost tasks that will help you to troubleshoot your ecosystem efficiently, along with extending Redis by using different modules.
Table of Contents (21 chapters)
Title Page
Dedication
Packt Upsell
Foreword
Contributors
Preface
13
Windows Environment Setup
Index

Introduction


Redis is a very popular, memory-based, lightweight key-value database. Strictly speaking, Redis is a data structure server, according to Matt Stancliff (@mattsta), one of the most important contributors to Redis (https://matt.sh/thinking-in-redis-part-one). The author of Redis, Salvatore Sanfilippo (@Antirez), first called it Redis, which stands for REmote DIctionary Server because Redis natively implements various kinds of data structures in memory, and provides a variety of APIs for manipulating these data structures. More importantly, Redis supports high-performance command processing, high availability/scalability architectures, and also data persistence features as a long running data store service.

With the development of high-concurrency and low-latency systems, the use of Redis is becoming more and more widespread. Redis has been ranked in the top ten of the DB-Engine complete ranking (https://db-engines.com/en/ranking) since 2017. Before that, it was ranked at the top of the key-value stores ranking (https://db-engines.com/en/ranking/key-value+store) for quite a long time.

The goal of this chapter is to guide readers to quickly set up a simple Redis instance and learn about some common operations, such as starting, connecting, and shutting down a Redis Server. Retrieving basic information from a Redis Server is also introduced. Moreover, it's essential to have a better understanding of the event model and communication protocol of Redis before learning Redis. The last two sections of this chapter include a detailed discussion of the event model and protocol of Redis.