How Load Balancers Distribute Traffic: A Simple Comic Guide

Load balancers distribute network traffic across multiple servers, ensuring no single server bears all the load and allowing applications to run smoothly.

A simple comic tutorial illustrates the concept: a single client communicates with one server, which can easily handle the request when the number of clients is small.

When the number of clients grows, the single server becomes overloaded and cannot handle all requests.

To solve this, more servers are needed, along with a method to balance client requests among them.

The load balancer sits in front of the servers, directing incoming client traffic to the appropriate server, preventing any single server from being overloaded.

This balancing reduces downtime and improves website performance.

Clients only need to interact with the load balancer, which then routes requests to the servers. If a server fails, the load balancer also handles the failure.

Cloud providers such as AWS and Azure offer their own load‑balancing services (e.g., Elastic Load Balancer, Azure Load Balancer), but understanding the basic concept is essential before exploring these services.