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
Packt Upsell
Windows Environment Setup

Exploring RDB

We have learned that, via persistence, Redis dumps its in-memory data to a file called dump.rdb by default. For beginners, it might be enough to understand the points mentioned in the previous recipe. For geeks who are eager to know more about how the RDB file works as a binary representation of Redis in-memory data, it's of great benefit to explore the RDB format. In this recipe, we will dig into the format of the RDB file to see what we can do with knowledge of the RDB format.

Getting ready…

You need to finish the installation of the Redis Server, as we described in the Downloading and installing Redis recipe in Chapter 1, Getting Started with Redis.

To inspect a binary file format, a binary editor is a must. In Ubuntu Linux, bvi is the most common binary editor. Install it as follows:

$ sudo apt-get install bvi

For macOS, you can download HexFriend at: 

For the purpose of demonstration, flushing all the data with the FLUSHALL...