Development tool optimizes cache keys using Git's existing file index

A development tool uses Git's internal file tracking system to generate cache keys efficiently. It creates cache keys by combining twelve different data components, including task configurations, dependency states, and file content hashes. The system leverages Git's existing blob IDs for tracked files instead of recalculating file hashes, reducing file system operations. This approach ensures cache consistency between editing and committing files while handling edge cases like normalized text encodings. The optimization aims to improve build performance by minimizing redundant hash calculations.