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

Codis – a proxy-based high-performance Redis Cluster solution


In this chapter, we have introduced Twemproxy, a proxy-based sharding solution provided by Twitter. To solve the horizontal scalability limitation and the lack of the administration dashboard, the CodisLabs offers another Redis data sharding proxy called Codis. The performance, high-availability, and the usability of the Codis are highly superior to Twemproxy. Meanwhile, it's fully compatible with Twemproxy. In addition, a handy tool called the redis-port is provided along with this proxy to perform the migration from the Redis/Twemproxy to Codis.

The architecture of Codis is shown in the following image.

The codis-server is a special Redis instance based on the redis-3.2.8 branch. Additional data structures and instructions are added for the slot-related operation and data migration. In the preceding diagram, we have three codis-servers, one master, and two slaves.

The codis-group is a group of codis-servers working as a partial...