Book Image

Redis Stack for Application Modernization

By : Luigi Fugaro, Mirko Ortensi
1 (1)
Book Image

Redis Stack for Application Modernization

1 (1)
By: Luigi Fugaro, Mirko Ortensi

Overview of this book

In modern applications, efficiency in both operational and analytical aspects is paramount, demanding predictable performance across varied workloads. This book introduces you to Redis Stack, an extension of Redis and guides you through its broad data modeling capabilities. With practical examples of real-time queries and searches, you’ll explore Redis Stack’s new approach to providing a rich data modeling experience all within the same database server. You’ll learn how to model and search your data in the JSON and hash data types and work with features such as vector similarity search, which adds semantic search capabilities to your applications to search for similar texts, images, or audio files. The book also shows you how to use the probabilistic Bloom filters to efficiently resolve recurrent big data problems. As you uncover the strengths of Redis Stack as a data platform, you’ll explore use cases for managing database events and leveraging introduce stream processing features. Finally, you’ll see how Redis Stack seamlessly integrates into microservices architectures, completing the picture. By the end of this book, you’ll be equipped with best practices for administering and managing the server, ensuring scalability, high availability, data integrity, stored functions, and more.
Table of Contents (18 chapters)
1
Part 1: Introduction to Redis Stack
6
Part 2: Data Modeling
11
Part 3: From Development to Production

Lua scripting

With Redis, developers can write Lua scripts and execute them within Redis. Lua is a lightweight scripting language known for its simplicity and efficiency, and Redis has leveraged its power to perform complex operations on stored data since Redis 2.6.0. Lua scripting offers several benefits, such as allowing the execution of multiple commands atomically, meaning all the commands within a Lua script will be executed as a single unit of work, ensuring consistency. This is particularly useful to ensure they are executed without interruption or interference from other clients.

By executing Lua scripts, the network round trips between the application and the server are removed, improving performance. Lua scripts are sent to Redis as an atomic block of instructions and executed directly on the server, eliminating the need to send multiple commands and receive responses individually.

Redis provides a Lua interpreter with a set of Redis-specific Lua functions that allow...