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Redis 4.x Cookbook

Redis 4.x Cookbook

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Redis 4.x Cookbook

Redis 4.x Cookbook

5 (4)

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 (15 chapters)
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13
Windows Environment Setup

Monitoring memory


Since Redis is an in-memory data service, it's of great essence to monitor the memory usage of Redis. In this recipe, we will learn the details of how to monitor the memory of Redis via the INFO command and MEMORY command.

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...

The operations to monitor memory of Redis are shown as following:

  1. To obtain the overall memory-related metrics of Redis, issue INFO MEMORY with bin/redis-cli:
$ bin/redis-cli INFO MEMORY
# Memory
used_memory:211428088
used_memory_human:201.63M
used_memory_rss:251547648
used_memory_rss_human:239.89M
used_memory_peak:3865330064
used_memory_peak_human:3.60G
used_memory_peak_perc:5.47%
used_memory_overhead:49242362
used_memory_startup:765624
used_memory_dataset:162185726
used_memory_dataset_perc:76.99%
total_system_memory:67467202560
total_system_memory_human:62.83G
used_memory_lua...

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