Learn how to implement a Layer 7 HTTP load balancer using HAProxy (High Availability Proxy) on AWS.

HAProxy (High Availability Proxy) is an open source, fast, and reliable solution that provides load balancer and reverse proxy features for TCP- and HTTP-based applications. HAProxy load balancer handles heavy load traffic and reroutes requests seamlessly across multiple servers.

HAProxy also supports the following features:

• Layer 4 (TCP) and Layer 7 (HTTP) load balancing.
• URL rewriting.
• Health checks.
• Proxying protocols.
• HTTP message logging.
• Rate limiting.
• SSL/TLS termination.
• Gzip compression.

Similarly, AWS ELB (Elastic Load Balancer) is well suited for the load balancing of HTTP and HTTPS traffic and provides advanced request routing targeted at the delivery of modern application architectures, including microservices and containers.

But there may be times when you don’t want to use a load balancer provided by AWS. For instance:

• You prefer an open source solution.
• You want more control over load balancer management and security.
• There are pricing constraints.

So, in this tutorial, we will learn how to implement a Layer 7 HTTP load balancer using HAProxy.

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