Worked on the langgenius/dify-official-plugins repository to enhance concurrency lock management in a multi-threaded plugin environment. Refactored the internal _fetch_locks structure from a standard dictionary to an OrderedDict, leveraging Python’s move_to_end method to ensure correct lock eviction order under high concurrency. This change improved the reliability of lock handling and reduced the risk of race conditions during plugin execution. The work demonstrated a strong understanding of Python data structures and threading, focusing on stability and maintainability. No bugs were fixed during this period, but the feature addressed a core aspect of concurrent workflow reliability in the codebase.