During March 2025, Yu Jiang focused on build optimization for the cubefs/cubefs repository, delivering a feature that enabled multi-threaded compilation of RocksDB. By modifying the build system to add the -j flag to the make command, Yu Jiang leveraged shell scripting and build systems expertise to utilize multiple CPU cores, thereby reducing build times across both local and CI environments. This change directly supported faster release cycles and more efficient development workflows for core storage components. The work demonstrated a practical approach to performance tuning and build automation using Shell, with a clear impact on the project’s integration and iteration speed.