Good and Bad Practices in Code Review: How to Be a Better Reviewer
Why Good Code Review Matters
Code review is one of the most important steps in the software development process. It goes far beyond finding bugs — it’s a moment of mutual learning, technical alignment, and continuous quality improvement.
However, not all code reviews are productive — some can create frustration, demotivate developers, or even generate team conflicts.
Here’s a critical breakdown of what separates a good code review from a bad one, along with practical tips to apply in your day-to-day work.
❌ Bad Code Review Practices
Avoid these behaviors to foster a healthier and more productive environment:
1. Blaming the developer and focusing only on problems
Comments that attack the author of the code create defensiveness. Focus on the code, not the person.
2. Using a toxic or aggressive tone
Sarcasm, irony, or rude language have no place in a professional and mature team. Respect is the foundation of constructive feedback.
3. Reviewing only the lines that changed
A good reviewer considers how changes affect the broader context of the system, not just the specific diff.
4. Giving vague or generic feedback
Saying “this is bad” without explanation or alternatives is frustrating and unhelpful.
5. Requesting low-priority changes in urgent tickets
Pointless style suggestions or nitpicks during tight deadlines add no real value and delay the team.
6. Imposing personal preferences
If something follows team standards, there’s no reason to force a personal taste.
✅ Good Code Review Practices
These behaviors make the process more effective, fair, and collaborative:
1. Highlighting what was done well
A good reviewer also recognizes clean, well-structured solutions. Positive feedback motivates and teaches.
2. Being collaborative and respectful
Always use a constructive tone. Instead of “this is wrong,” try “a better approach might be…”
3. Evaluating the broader impact
Look beyond the commit to see if the change affects performance, other modules, or business logic.