Chapter 12, Service and Application Resiliency

1. Resiliency refers to an application or platform’s ability to handle faults, exceptions, or other problems that may arise. Redundancy refers to the duplication of data or services (or both) to help protect against data loss due to network issues or in the event of a disaster. Reliability is a measure of confidence in a platform or application’s ability to operate consistently.
2. Both fallback and circuit breaker patterns allow you to stop execution and return a value that can be used in lieu of the expected operation. Fallback patterns will not perform any additional logic to allow further operations to continue on the same target, whereas circuit breakers will pause execution for a set amount of time and reset once the threshold is met.
3. It allows you to retry operations that may fall victim to timeouts or other connectivity issues, either through graduated wait times or by coupling with other patterns to manage...