Worked on the AutoMQ/automq repository to enhance system reliability by addressing resource management challenges in concurrent Java environments. Focused on strengthening exception handling within the AsyncSemaphore component, the developer resolved a critical issue where permits could be leaked if a task threw an exception during execution. By ensuring permits are released in the catch block, the fix reduced the risk of resource leakage and improved stability under high-concurrency scenarios. No new features were introduced during this period, as the primary emphasis was on hardening error paths and maintaining resource integrity through careful application of concurrency and exception handling techniques.