Circuit Breaker
Circuit Breaker is a software design pattern used to detect failures and prevent cascading failures in distributed systems. It acts as a proxy for operations that might fail, monitoring for errors and temporarily disabling calls to a failing service when a threshold is exceeded. This pattern helps improve system resilience and stability by allowing graceful degradation and recovery.
Developers should implement Circuit Breaker when building microservices, APIs, or any distributed system where service dependencies can fail, to avoid overwhelming a failing service with repeated requests. It is crucial for scenarios like handling third-party API calls, database connections, or network services to prevent system-wide outages and enable fallback mechanisms, such as returning cached data or default responses.