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

Backup and restore

It is always important to have backup plans for production databases. Once things break, such as hard disk failure, accidental data deletion, or network intrusion, backing up the data can protect against data losses. In Chapter 6, Persistence, we have learned that Redis data can be persisted into the RDB file. In this recipe, we will revisit the RDB persistence option and show you the detailed steps you can take to back up and restore data for Redis.

Getting ready…

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

How to do it...

Let us see how to backup and restore Redis data.

Backing up Redis data

Firstly, to back up Redis data, take the following steps:

  1. Execute the BGSAVE command on Redis Server:
$ bin/redis-cli BGSAVE
Background saving started
  1. Copy the saved RDB file to a safe location:
$ cp /var/lib/redis/dump.rdb /mnt/backup/redis/dump.$(date +%Y%m%d%H%M).rdb