A load balancer is a device or software application that acts as a traffic cop, sitting in front of your servers and routing incoming client requests across all servers capable of fulfilling those requests. By distributing the workload, it prevents any single server from becoming overwhelmed, which increases the responsiveness and availability of applications. To set one up, you typically choose between a hardware appliance or a software-based solution like NGINX or HAProxy, configure your backend server pool, and define the distribution algorithm, such as round-robin or least connections, to ensure traffic is shared effectively.
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