Building a Production-Grade API System with .NET, gRPC, and Microservices Architecture

Short summary

This guide demonstrates building a production-grade .NET microservices system using Domain-Driven Design, CQRS, and gRPC for high-performance internal communication. The six-layer architecture separates concerns across Domain, Application, Infrastructure, Contracts, gRPC Service, and HTTP API Gateway layers. By extracting business logic into rich domain entities, the system maintains transactional integrity while enabling independent scaling of read and write workloads.

• •Complete microservices reference architecture using .NET Core with DDD and CQRS patterns
• •Six-layer architecture design with gRPC for service-to-service communication and HTTP/REST externally
• •Rich domain entities enforce business rules; CQRS separates optimized read and write models for scalability

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