PR Preview Apps
Modernizing the Code Review Workflow
- Madhankumar J
@madhankumar028
The Workflow
1. Trigger
Developer creates/pushes(synchornize) code to a Pull Request.
2. Deploy
CI/CD builds and hosts an isolated environment.
3. Review
Stakeholders visit a unique URL.
4. Cleanup
Environment is destroyed on merge/close.
Key Benefits
Faster Feedback
Reviewers see live changes instantly without pulling code.
Parallel Testing
Test multiple features simultaneously without environment conflicts.
Stakeholder Alignment
Designers and PMs can verify UI/UX in a real-world setting.
No More 'It Works on My Machine'
Consistent environments ensure high deployment confidence.
Leveraging Automations
Lighthouse Metrics
- Automatically capture performance
- Accessibility,
- SEO scores for every change.
Bundle Budget Tracking
- Monitor JavaScript and CSS bundle sizes to prevent performance regressions.
Visual Regression Testing
- Catch UI bugs before they hit production.
Deploy with Confidence
PR Preview Apps are the bridge between development and production, ensuring every stakeholder is empowered to review and improve the product.