Worked on stabilizing Pulsar integration within the pingcap/tiflow repository by addressing a protocol handling issue in Go. Focused on backend development and data synchronization, the work involved extending the IsMQScheme function to support pulsar+http and pulsar+https protocols. This targeted bug fix ensured that MQ fields in changefeeds are correctly honored when using Pulsar HTTP or HTTPS schemes, reducing the risk of misconfiguration and improving reliability for Pulsar-backed data pipelines. The approach maintained the existing API surface while enhancing compatibility and correctness, demonstrating careful code maintenance and a clear understanding of protocol-level requirements in distributed systems.