Description: Server health checking is a critical process that monitors the health of the targets behind a load balancer. This process involves performing periodic checks to determine if the servers or application instances are operational and responding adequately to requests. Health checks are conducted by executing specific tests, such as HTTP requests, pings, or custom status checks, which help identify whether a server is functioning correctly or has failed. If a server fails these checks, the load balancer can automatically redirect traffic to other operational servers, thus ensuring service availability and performance. This functionality is essential for maintaining user experience, as it prevents end-users from encountering downtime or application errors. Additionally, health checks can be configured to send alerts to system administrators, allowing for a quick response to potential issues. In summary, server health checking is a fundamental tool in IT infrastructure management, ensuring that services remain available and functioning optimally.
