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Most REST API tutorials stop when CRUD works.
Production systems begin where CRUD ends.
After working on enterprise .NET applications, I realized the biggest engineering challenges aren't creating endpoints—they're designing APIs that remain secure, scalable, observable, and maintainable as systems grow.
In this article, I share 15 practical engineering principles that have helped me build production-ready REST APIs using ASP.NET Core.
If you found this article useful, I'd appreciate your feedback.
What You'll Learn
- API Contracts
- Resource-Oriented Design
- API Versioning
- Validation
- Exception Handling
- Authentication & Authorization
- Observability
- Pagination
- Performance
- OpenAPI
- Testing
- CI/CD
- Common Mistakes
- Production Checklist
Discussion
Which engineering principle has had the biggest impact on your production APIs?
I'd love to hear your experience in the comments.
🔗 GitHub: https://github.com/Sahithbasani
🔗 LinkedIn: https://linkedin.com/in/sahithbasani
🔗 Medium: https://medium.com/@sahithbasani1
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