Downstream Resiliency

What is the purpose of setting a timeout when making a network call?

• To reduce resource leaks

• To detect connectivity faults

• To increase the response time

• To improve network performance

Which web API does not have a default timeout configured?

• JavaScript's XMLHttpRequest

• Python's requests library

• Go's HTTP package

• .NET Core HttpClient

How can we determine a good timeout duration for a network call?

• Based on the desired false timeout rate

• By using a fixed duration for all calls

• By measuring the response time of the caller

• By relying on the default timeout value

What is the purpose of exponential backoff in retrying network requests?

• To amplify the total number of retries

• To slow down the retry attempts

• To increase the load on the downstream service

• To reduce the probability of success

What is the recommended approach when retrying network requests in batch applications?

• Retry immediately after a failure

• Park failed requests in a retry queue

• Increase the number of retries

• Cancel the request and move on

What is the main purpose of a circuit breaker in downstream resiliency?

• To slow down network calls

• To prevent network calls entirely

• To amplify the number of retries

• To increase the response time

What happens when a circuit breaker transitions to the half-open state?

• Network calls are allowed to pass through

• Network calls are blocked entirely

• The circuit breaker resets its failure count

• The circuit breaker opens the circuit

How can a circuit breaker help in gracefully degrading a service?

• By failing fast and canceling network calls

• By retrying failed requests immediately

• By opening the circuit and blocking network calls

• By allowing network calls to pass through

What should a service do when a downstream dependency is non-critical and unavailable?

• Retry the request immediately

• Fail fast and cancel the request

• Open the circuit and block network calls

• Degrade gracefully and continue processing

Why is it important to measure the entire lifecycle of a network call?

• To increase the response time

• To debug production issues

• To amplify the load on the downstream service

• To reduce resource leaks