Clean Architecture Backend
Layered APIs with thin HTTP surfaces, application use cases, domain invariants, infrastructure adapters, and persistence boundaries.
APIApplicationDomainInfrastructurePersistenceExternal Systems
.NET backend architecture
Backend Architecture Patterns
Reusable production patterns for .NET APIs, integrations, AI workflows, browser-to-hardware systems, and cloud delivery, each tied to real portfolio evidence.Production Architecture, Not Abstract Diagrams
These patterns summarize how I structure backend systems when projects need maintainable APIs, predictable integrations, observable async processing, and deployment paths that can be operated after release.
6Pattern families37Explicit system nodesProofLinked project evidence
Pattern atlas
From request boundary to production runtime
CQRS/MediatR Request Pipeline
Command and query requests pass through validation, authorization, logging, performance checks, handlers, domain events, and persistence.
HTTP RequestEndpointValidatorPipeline BehaviorsHandlerDbContextDomain Events
Integration Facade
Stable consumer contracts over messy upstream systems, with tenant-aware gateways, cached mappings, validation, and forensic logging.
Consumer APIFacadeMapping DBGatewayAudit LogUpstream Systems
OpenAI Async Pipeline
Queue-backed AI processing with structured outputs, worker isolation, lifecycle state, and real-time user feedback.
Meal EntryQueueWorkerOpenAI JSON SchemaPersistenceSSE Updates
Project proof
Browser-to-Hardware Bridge
Web UI actions mapped to local hardware capabilities without unsafe browser plugins or server roundtrips.
Portal UIJS BridgeWinForms HostCamera/Scanner/PrinterMedia PipelineBackoffice
Cloud-Native Delivery
Deployment and validation flow across Azure App Service, Docker, Kubernetes/OpenShift, Linux, Nginx, and CI/CD.
CIContainer/ImageConfigRuntimeSmoke TestsTelemetry
Where These Patterns Show Up
The same architecture thinking appears in healthcare appointment and e-result middleware, multi-tenant Clean Architecture SaaS, OpenAI-backed nutrition analysis, banking and OTP integrations, kiosk/hardware workflows, and containerized cloud delivery.