Book Image

Mastering Redis

By : Jeremy Nelson
Book Image

Mastering Redis

By: Jeremy Nelson

Overview of this book

Redis is the most popular, open-source, key value data structure server that provides a wide range of capabilities on which multiple platforms can be be built. Its fast and flexible data structures give your existing applications an edge in the development environment. This book is a practical guide which aims to help you deep dive into the world of Redis data structure to exploit its excellent features. We start our journey by understanding the need of Redis in brief, followed by an explanation of Advanced key management. Next, you will learn about design patterns, best practices for using Redis in DevOps environment and Docker containerization paradigm in detail. After this, you will understand the concept of scaling with Redis cluster and Redis Sentinel , followed by a through explanation of incorporating Redis with NoSQL technologies such as Elasticsearch and MongoDB. At the end of this section, you will be able to develop competent applications using these technologies. You will then explore the message queuing and task management features of Redis and will be able to implement them in your applications. Finally, you will learn how Redis can be used to build real-time data analytic dashboards, for different disparate data streams.
Table of Contents (18 chapters)
Mastering Redis
About the Author
About the Reviewers

Monitoring with Redis Sentinel

Redis Sentinel is a special operating mode of Redis for monitoring running Redis master and slave instances. Redis Sentinel allows for a failing master instance to be replaced by a replicated slave and other types of failures thereby giving users of Redis a high availability option for their application. Beside monitoring and automatic failover, Redis Sentinel also provides notification options where Redis Sentinel will alert the system administrators or other programs through an API when a critical error occurs in a monitored Redis instance. Redis Sentinel also assists in operational management by being a configuration provider for client automatic discovery of services. While simple in theory, Redis Sentinel is used in very complex workflows and monitoring/failover scenarios in the Enterprise.

As a distributed system, Redis Sentinel requires at least three instances for a robust deployment. Multiple Sentinels cooperate to detect failing masters by requiring...