Description: Application health checking is an essential function in load balancers, designed to monitor the status and availability of registered targets, such as servers or application instances. This functionality allows the load balancer to determine whether a target is functioning correctly or if, on the contrary, it has failed or is inactive. By performing periodic checks, such as HTTP requests or pings, the load balancer can divert traffic away from targets that are not responding adequately, ensuring that end users are always directed to operational instances. This capability not only enhances user experience by reducing downtime but also optimizes resource usage, allowing traffic to be distributed more efficiently among available servers. Health checking is fundamental in microservices architectures and cloud environments, where scalability and resilience are crucial. Additionally, it provides system administrators with clear visibility into the status of their applications, facilitating the identification and resolution of issues before they impact users.
