Code Review Best Practices

Code reviews are one of the most effective ways to improve code quality and share knowledge. Here's how to do them right.

Why Code Reviews Matter

• Quality: Catch bugs before they reach production
• Knowledge sharing: Spread expertise across the team
• Consistency: Maintain coding standards
• Mentorship: Help junior developers grow

Best Practices

For Authors

1. Keep PRs small — Under 400 lines is ideal
2. Write clear descriptions — Explain what and why
3. Self-review first — Catch obvious issues yourself
4. Respond to feedback — Don't take it personally

For Reviewers

1. Review within 24 hours — Don't block your team
2. Focus on logic, not style — Use linters for style
3. Ask questions, don't demand — "What if..." not "You must..."
4. Praise good code — Positive reinforcement works

The Code Review Checklist

• [ ] Does the code work as intended?
• [ ] Is the code readable?
• [ ] Are there tests?
• [ ] Is there documentation?
• [ ] Are there security issues?
• [ ] Is there performance impact?

Tools and Automation

Use automation to reduce review burden:

• Linters: ESLint, Prettier
• Formatters: Pre-commit hooks
• CI/CD: Automated tests
• GitProductivity: Track review metrics

Conclusion

Great code reviews are a skill that takes time to develop. Start small, be patient, and keep improving.