System Design Concept - Load Balancers

In today's video, I will go over the concept of Load Balancers

Load Balancer (LB) is a critical component of any distributed system. It helps to spread the traffic across a cluster of servers to improve the responsiveness and availability of applications, websites, or databases. LB also keeps track of the status of all the resources while distributing requests. If a server is not available to take new requests or is not responding or has an elevated error rate, LB will stop sending traffic to such a server.
Typically a load balancer sits between the client and the server accepting incoming network and application traffic and distributing the traffic across multiple backend servers using various algorithms. By balancing application requests across multiple servers, a load balancer reduces individual server load and prevents any one application server from becoming a single point of failure, thus improving overall application availability and responsiveness.

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