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

Reviewing the time complexity of Redis data structures

With this understanding of the computing big notation, we'll next briefly review Redis's basic data structures, paying attention to the time complexity implications of using the data structure with the current commands supported by Redis.


The most basic data structure for Redis values is a string, the same data type as a Redis key. Using Redis at its simplest is as a string-to-string key-value storage. Note that Redis has similar performance characteristics to other key-value data storage solutions such as Memecached3.

In Redis, a string does not merely contain alphanumeric characters as strings are normally understood to be in higher-level programming languages, but contain serialized characters in C, the principal programming language used in Redis. The most basic GET and SET commands for Redis strings are O(1) operations, making Redis extremely fast as a simple key-value store. The speed and ease of using GET and SET should not...