Master Microservices with Spring Boot and Spring Cloud - Step 28 – Playing with Circuit Breaker Features of Resilience4j

The video tutorial explores the concept of Circuit Breakers in microservices, focusing on their setup, testing, and configuration. It explains how Circuit Breakers manage service requests, handle failures, and transition between states like closed, open, and half-open. The tutorial also covers how to configure Circuit Breaker settings using property-based and YAML configurations, providing insights into failure rate thresholds and slow call durations.

What is the primary purpose of using a circuit breaker in microservices?

• To reduce the size of the microservice

• To increase the number of API calls

• To prevent system overload by managing failed requests

• To enhance the speed of API requests

Which command is used to simulate multiple API requests in the tutorial?

• ping

• curl

• top

• watch

What happens when a circuit breaker is in the open state?

• It sends all requests to the microservice

• It returns a fallback response without calling the microservice

• It increases the request rate

• It logs all requests for future analysis

In which state does a circuit breaker send a percentage of requests to the microservice?

• Half-open

• Open

• Closed

• Idle

What can be configured to determine when a circuit breaker transitions to an open state?

• Success rate threshold

• Failure rate threshold

• Request size threshold

• Response time threshold

Which configuration format is mentioned for customizing circuit breaker settings in Spring Boot?

• XML

• JSON

• INI

• YAML

What is the default slow call duration mentioned in the tutorial?

• 60 seconds

• 90 seconds

• 30 seconds

• 120 seconds