What is the purpose of circuit breakers in microservices?
A) To prevent cascading failures by stopping requests to a failing service
B) To load balance requests across services
C) To cache responses from microservices
D) To manage service discovery
Answer:
A) To prevent cascading failures by stopping requests to a failing service
Explanation:
Circuit breakers are a critical pattern in microservices architectures designed to prevent cascading failures. When a service starts to fail or becomes unresponsive, a circuit breaker can “trip” and stop further requests to that service. This helps prevent the failure from spreading to other parts of the system, protecting the overall stability of the application.
Once the circuit breaker is tripped, it can periodically check if the service has recovered and, if so, allow requests to flow again. This pattern is essential for building resilient and fault-tolerant microservices systems, as it allows the system to degrade gracefully rather than fail catastrophically.
Reference links:
https://www.javaguides.net/p/spring-boot-microservices-tutorial.html