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Mastering NGINX

You're reading from   Mastering NGINX Personalize, customize and configure NGINX to meet the needs of your server

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Product type Paperback
Published in Jul 2016
Publisher
ISBN-13 9781782173311
Length 320 pages
Edition 2nd Edition
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Author (1):
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Dimitri Aivaliotis Dimitri Aivaliotis
Author Profile Icon Dimitri Aivaliotis
Dimitri Aivaliotis
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Table of Contents (15) Chapters Close

Preface 1. Installing NGINX and Third-Party Modules FREE CHAPTER 2. A Configuration Guide 3. Using the mail Module 4. NGINX as a Reverse Proxy 5. Reverse Proxy Advanced Topics 6. The NGINX HTTP Server 7. NGINX for the Application Developer 8. Integrating Lua with NGINX 9. Troubleshooting Techniques A. Directive Reference
B. The Rewrite Rule Guide C. The NGINX Community D. Persisting Solaris Network Tunings
Index

Load-balancing


We've already shown some examples of using load-balancing in our discussion of upstream servers. Besides being a termination point for clients from the Internet as a reverse proxy, NGINX serves the function of a load balancer well. It can protect your upstream servers from overload by spreading out the connections that it proxies. Depending on your use case, you can choose one of three load-balancing algorithms.

Load-balancing algorithms

The upstream module can select which upstream server to connect to in the next step by using one of three load-balancing algorithms—round-robin, IP hash, or least connections. The round-robin algorithm is selected by default, and doesn't need a configuration directive to activate it. This algorithm selects the next server, based on the server that was selected previously, the server that is next in the configuration block, and the weight that each server carries. The round-robin algorithm tries to ensure a fair distribution of traffic, based...

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