System Design: Load Balancer

A load balancer evenly distributes incoming traffic among web servers that are defined in a load-balanced set.
after a load balancer and a second web server are added, we successfully solved no failover issue and improved the availability of the web tier. Details are explained below: • If server 1 goes offline, all the traffic will be routed to server 2. This prevents the website from going offline. We will also add a new healthy web server to the server pool to balance the load. • If the website traffic grows rapidly, and two servers are not enough to handle the traffic, the load balancer can handle this problem gracefully. You only need to add more servers to the web server pool, and the load balancer automatically starts to send requests to them