Clean ArchitectureMicroservicesNode.js
The Problem with Framework-Coupled Code
Every few years the industry rallies around a new framework. Teams rush to adopt it, coupling business logic directly to framework APIs. When the framework falls out of favour, or introduces breaking changes, the cost of migration is enormous.
Clean Architecture addresses this by enforcing a clear dependency rule: source-code dependencies always point inward, toward higher-level policies.
Core Layers
- Entities: Enterprise-wide business rules.
- Use Cases: Application-specific business rules.
- Interface Adapters: Controllers, presenters, gateways.
- Frameworks & Drivers: The outermost ring: databases, HTTP servers, UI.
Practical Benefits
- Testability: Business logic runs without databases or web servers.
- Flexibility: Swapping a database or API client is a localised change.
- Onboarding: New developers understand boundaries immediately.
How We Apply This at ViyoraTech
Every engagement starts with domain modelling. We identify bounded contexts, define explicit interfaces, and only then choose infrastructure. The result is software that survives technology shifts and grows with the business.
"Architecture is about the important stuff. Whatever that is." (Martin Fowler)
Start with the domain. Let the frameworks serve you, not the other way around.