What happens when one microservice starts failing? Imagine your API depends on a Payment Service. Everything works normally, until the Payment Service becomes slow or starts returning errors. Your API keeps sending requests anyway. Each request waits for the Payment Service to respond, so connections and resources start getting tied up. As more requests arrive, the problem spreads. The Payment Service is struggling, but now your API is struggling too. This is where the Circuit Breaker Pattern comes in. Instead of repeatedly calling a service that is clearly failing, your system can temporarily stop those calls and fail fast. But how does it know when to open the circuit, when should it try the service again, and what happens when the service recovers? Circuit Breaker Pattern System Design Academy @CTBEsoftwareengineers
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