Design Microservices Architecture with Patterns and Principles - Circuit Breaker States

The video tutorial explains the three basic modes of a circuit breaker: closed, open, and half-open. In the closed state, all requests are executed as the circuit breaker is not open. The open state prevents the application from executing operations when errors occur, acting as a response to previous failures. The half-open state allows a few operations to check if errors persist, determining whether to open or close the circuit breaker.

What are the three basic modes of a circuit breaker?

• Active, Inactive, and Testing

• Closed, Open, and Half-Open

• Start, Stop, and Pause

• On, Off, and Standby

In the closed state, what happens to the requests?

• All requests are blocked

• All requests are executed

• Requests are queued

• Only some requests are executed

What is the primary function of the open state in a circuit breaker?

• To execute a few operations

• To prevent repeated execution during errors

• To allow all requests

• To reset the system

What does the half-open state of a circuit breaker do?

• Executes all operations

• Executes a few operations to check for errors

• Blocks all operations

• Resets the circuit breaker

If no error occurs in the half-open state, what is the next state of the circuit breaker?

• It shuts down

• It transitions to closed

• It remains half-open

• It transitions to open