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

Understanding Redis transactions

A transaction in a relational database is a group of operations performed as an atomic action within a it. This means the group of operations must either complete or fail as a whole. However, the concept of transactions in Redis is a different story. In this recipe, we'll take a look at Redis transactions, and find out the differences in transactions between Redis and RDBMS.

Getting ready…

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

How to do it...

To understand Redis transactions, there is a scenario where we are going to organize a coupon codes seckilling, a quick sell out online, for a certain restaurant in Relp. There are only five coupon codes for this seckilling and we have a key, counts:seckilling, as a counter to hold the count of available coupon codes.

Here is the pseudo-code for this counter implementation:

//Initiate the count of coupon...