Alex Zayats enhanced the microsoft/kiota-java repository by improving the RetryHandler to robustly parse Retry-After HTTP header values, including support for comma-separated intervals. Using Java and focusing on backend development and error handling, Alex implemented comprehensive unit tests to validate the new parsing logic against a variety of valid and invalid inputs. This work addressed potential issues with miscomputed backoff intervals, increasing the reliability and predictability of API retry behavior. Additionally, Alex performed code formatting cleanup to align with coding standards, which improved maintainability. The changes delivered deeper test coverage and streamlined future development for the retry mechanism.