4.42 The classic load balancer CLB (V1)

The Classic Load Balancer (CLB) is a powerful and reliable AWS module that provides efficient distribution of incoming network traffic across multiple Amazon EC2 instances. The CLB is designed to scale and handle high volumes of traffic, ensuring that your applications remain available and responsive to your users at all times.

The CLB is a legacy version of the Elastic Load Balancer (ELB) that was introduced by AWS in 2009. It is a simple, yet effective load balancing solution that is still widely used by many organizations today. The CLB operates at the transport layer (Layer 4) of the OSI model, providing TCP/UDP load balancing capabilities.

The CLB is highly customizable and can be configured to meet the specific needs of your application. It supports a wide range of protocols, including HTTP, HTTPS, TCP, and SSL, and can distribute traffic based on a variety of criteria, such as round-robin, least connections, and IP hash.

One of the key benefits of the CLB is its ability to automatically detect and route traffic to healthy instances, ensuring that your application is always available. The CLB also provides advanced health checking capabilities, allowing you to monitor the health of your instances and take corrective action if necessary..

Overall, the Classic Load Balancer is a reliable and efficient solution for load balancing your AWS resources. Whether you are running a small website or a large-scale application, the CLB can help you scale your infrastructure and deliver a seamless user experience.