Worked on the web-infra-dev/rsbuild repository to enhance the reliability of the caching subsystem by addressing a persistent cache directory configuration issue. Focused on stabilizing build processes, the developer delivered a targeted bug fix in TypeScript that ensured the buildCache component consistently respected the specified cache directory. This adjustment reduced variability in caching behavior across different environments, leading to more predictable and reliable builds in both CI and local development. Leveraging expertise in build tools and caching, the work improved the overall stability of the build pipeline by minimizing cache-related flakiness, contributing to a smoother and more dependable development workflow.