06-best-practices.md

Git Best Practices

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1. Commit Best Practices

• Keep commits small and atomic
  • Each commit should have a single responsibility (e.g., "Fix bug in user authentication" instead of "Fix bugs and refactor database queries").
• Write meaningful commit messages
  • Follow the convention:

    <type>: <short description>
    
    <optional longer description>
    

    Example:

    feat: Add user authentication via JWT
    
    - Implement login with JWT tokens
    - Store tokens securely in HTTP-only cookies
    

• Commit only relevant changes
  • Avoid committing unnecessary files (e.g., IDE settings, logs). Use .gitignore to prevent them from being tracked.

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2. Branching and Workflow Best Practices

• Use a branching strategy
  • GitFlow (for complex projects)
  • GitHub Flow (for simpler projects)
  • Trunk-based development (for fast-paced CI/CD environments)
• Use descriptive branch names
  • Example:
    • feature/user-authentication
    • bugfix/fix-login-redirect
    • hotfix/security-vulnerability
• Rebase instead of merging for clean history
  • Use git rebase for feature branches before merging to avoid unnecessary merge commits.
  • Example:

    git checkout feature-branch
    git rebase main

• Avoid long-lived branches
  • Keep feature branches short-lived and merge them quickly to avoid conflicts.

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3. Collaboration Best Practices

• Use Pull Requests (PRs) for code reviews
  • Enforce PR reviews before merging.
  • Provide clear descriptions of changes.
• Squash and merge for cleaner history
  • Helps keep the commit history readable.
• Resolve conflicts properly
  • Don't blindly accept incoming changes. Carefully review and test merged code.

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4. Security and Performance Best Practices

• Never commit secrets
  • Use environment variables or secret management tools instead.
  • Consider using git-secrets or pre-commit hooks to prevent accidental secret commits.
• Sign commits (optional but good for security)
  • Use GPG or SSH to sign commits for authenticity.
  • Example:

    git commit -S -m "feat: Implement secure authentication"

• Optimize repository size
  • Avoid committing large binary files (use Git LFS if needed).
  • Regularly prune and clean up old branches.

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5. Handling Mistakes Gracefully

• Use git stash to save work-in-progress changes
• Undo mistakes with caution
  • git reset --soft HEAD~1 (Undo last commit but keep changes)
  • git checkout -- <file> (Discard unstaged changes)
  • git reflog (Recover lost commits)

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