Master CLAUDE.md: 5 Patterns That Make Your AI Assistant Remember Everything

CLAUDE.md files provide Claude Code with persistent, structured memory across sessions, eliminating repetitive context-setting. The article presents 5 daily-use patterns—starting with a project root foundation file containing specific build commands, architecture details, and coding standards, followed by user-level personal preferences at ~/.claude/CLAUDE.md that apply across all repositories. Key principles include keeping instructions concrete and specific, limiting files to under 200 lines, and using /init to auto-generate a starting configuration.