Health Checks & Server Monitoring

Imagine a busy restaurant with multiple chefs. If one chef gets sick, you don't want to send orders to them, right?

In load balancing, health checks do exactly that. They constantly monitor backend servers to ensure they are ready to handle requests.

Without health checks, a load balancer might keep sending requests to a server that is down, overloaded, or unresponsive.

• Bad User Experience: Users get errors instead of content.
• Wasted Resources: The load balancer tries to connect to a dead end.
• Cascading Failures: Overloads can spread if requests aren't redirected.