Worked on the pingcap/docs repository to enhance user-facing documentation for TiDB, focusing on clarifying product constraints and reducing potential misconfigurations. Used Markdown to update guides, specifically detailing that the cached table size limit is 64 MiB rather than 64 MB and documenting that TiDB Cloud Serverless does not support enabling the enable-table-lock configuration. The approach emphasized accuracy and traceability, linking documentation changes directly to relevant commits. By refining technical documentation, the work aimed to minimize customer support overhead and streamline onboarding for new users, demonstrating attention to detail and a strong grasp of documentation best practices within the database ecosystem.