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Load Balancing WordPress with HAProxy
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By Mitchell Anicas
Developer and author at DigitalOcean.
Load Balancing WordPress with HAProxy

Introduction

Adding a load balancer to your server environment is a great way to increase reliability and performance. The first tutorial in this series will introduce you to load balancing concepts and terminology, followed by two tutorials that will teach you how to use HAProxy to implement layer 4 or layer 7 load balancing in your own WordPress environment. The last tutorial covers SSL termination with HAProxy.

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An Introduction to HAProxy and Load Balancing Concepts

Published on May 13, 2014 · Updated on March 28, 2022

An introduction to basic load balancing concepts and terminology, using HAProxy, with some examples.

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A tutorial on how to use HAProxy as a Layer 4 Load Balancer for WordPress Application Servers. It assumes that your setup includes a WordPress application server that connects to a separate MySQL database server.

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In this tutorial, we will teach you how to use HAProxy as a layer 7 load balancer to serve multiple applications from a single domain name or IP address. Load balancing can improve the performance, availability, and resilience of your environment.

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HAProxy, which stands for High Availability Proxy, is a popular open source software TCP/HTTP Load Balancer and proxying solution.

In this tutorial, we will go over how to use HAProxy for SSL termination, for traffic encryption, and for load balancing your web servers. We will also show you how to use HAProxy to redirect HTTP traffic to HTTPS.

Native SSL support was implemented in HAProxy 1.5.x, which was released as a stable version in June 2014.

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