DEV: HAProxy Load Balancing Basics
Explore the fundamentals of load balancing by setting up HAProxy in a controlled lab environment. You'll configure both HTTP and TCP load balancing, simulate failures, and see how HAProxy maintains availability and performance under load.
About This Course
HAProxy is a free, open source, high-performance and reliable reverse proxy offering high availability, load balancing, and proxying for TCP and HTTP-based applications.
Known for its speed, reliability, and rich feature set, HAProxy is widely used to distribute traffic across multiple servers, ensuring high availability and improved scalability.
In this course, you will learn how to:
- Install HAProxy on Ubuntu
- Configure HAProxy for various load balancing scenarios
You'll also get a solid introduction to load balancing fundamentals to help you understand how and why it all works.
Prerequisites
To get the most out of this course, you should meet the following prerequisites:
- Basic familiarity with Linux
- Comfortable using the command line
- Able to work with terminal-based text editors (e.g.,
vim,nano, oremacs)
Why bother?
You might wonder why it's worth learning to use a load balancer like HAProxy when modern container orchestration platforms and cloud providers often handle it for you (arguably better than most of us could configure manually).
But despite the rise of cloud-native technologies, traditional infrastructure hasn't disappeared, and likely never will. Many production environments still rely on tried-and-true components like HAProxy for performance, control, and simplicity.
Even in Kubernetes or cloud-managed setups, load balancing is often powered by tools like HAProxy behind the scenes. Learning how these components work gives you a deeper understanding of what's happening under the hood, making you better equipped to troubleshoot, optimize, and build more resilient systems.
What's Inside?
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