Free AWS Certified Developer Associate DVA-C02 Practice Question

In the scenario given, a third-party service that is intermittently unavailable would benefit from implementing retries with exponential backoff and jitter. The exponential backoff method systematically increases the wait time between retries after a failed attempt to call the third-party service. Adding jitter reduces the probability that multiple instances of your application will attempt to retry at the same moment, avoiding simultaneous retries that can lead to the 'thundering herd' problem when the service recovers. This can be particularly useful for distributed systems that rely on external services to ensure they can continue to operate effectively during transient outages. Using a circuit breaker does address an unreliable service, but the question specifically asks for a pattern that involves retry logic. Increasing read and write capacity or immediate recursive retries do not address the underlying issue of the service's unpredictability and may worsen it by potentially overloading the service when it comes back online.