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Mastering Redis

You're reading from   Mastering Redis Take your knowledge of Redis to the next level to build enthralling applications with ease

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Product type Paperback
Published in May 2016
Publisher Packt
ISBN-13 9781783988181
Length 366 pages
Edition 1st Edition
Languages
Tools
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Authors (2):
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Vidyasagar N V Vidyasagar N V
Author Profile Icon Vidyasagar N V
Vidyasagar N V
Jeremy Nelson Jeremy Nelson
Author Profile Icon Jeremy Nelson
Jeremy Nelson
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Toc

Table of Contents (13) Chapters Close

Preface 1. Why Redis? FREE CHAPTER 2. Advanced Key Management and Data Structures 3. Managing RAM – Tips and Techniques for Redis Memory Management 4. Programming Redis Part One – Redis Core, Clients, and Languages 5. Programming Redis Part Two – Lua Scripting, Administration, and DevOps 6. Scaling with Redis Cluster and Sentinel 7. Redis and Complementary NoSQL Technologies 8. Docker Containers and Cloud Deployments 9. Task Management and Messaging Queuing 10. Measuring and Managing Information Streams A. Sources Index

Overview of running Redis Cluster


Nodes in a Redis Cluster are Redis instances that are either masters or slaves. A master Redis instance is allocated one or more of the 16,384 available hash slots where Redis keys are assigned to a hash slot based on the CRC16 hashing of the key and taking the remainder of dividing the CRC16 by the number of masters. When a Redis cluster is running, each node has two TCP sockets open; the first is the standard Redis protocol for connecting clients, the default being port 6379 and the second port is calculated from the sum of the first port plus 10000 (16379 for the default port) that runs the Cluster's binary protocol for node-to-node communication. Clients should never need to connect directly with the cluster bus port but with the lower, standard port. Nodes in the Redis Cluster use the Redis cluster bus to connect with every other node in a mesh network topology. This means that for a Redis cluster of six nodes made up of three masters and three slaves...

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