Hystrix

Hystrix is a software tool that helps maintain the stability of complex computer systems, especially those that connect multiple services. It acts like a safety mechanism by monitoring calls between services and preventing failures in one part from spreading and causing system-wide issues. When a service is slow or unresponsive, Hystrix can temporarily block it, quickly switch to backup options, or give responses that indicate trouble, ensuring the overall system remains reliable and responsive. Essentially, Hystrix helps systems gracefully handle errors and avoid crashes by managing how different components interact.