API Design: Guides, Interview Questions and News

Technologies 5

gRPC in .NET: High-Performance Service Communication

Build fast gRPC services in .NET with Protobuf contracts, streaming, client factory, interceptors, deadlines, gRPC-Web, JSON transcoding and load balancing.

16 min read

ASP.NET CoreIntermediate

OpenAPI in ASP.NET Core: Documentation and Client Generation

Generate OpenAPI 3.1 and 3.2 documents in ASP.NET Core with Microsoft.AspNetCore.OpenApi, transformers, Scalar or Swagger UI, and Kiota or NSwag clients.

14 min read

ASP.NET CoreIntermediate

REST API Design Best Practices with ASP.NET Core

REST API design best practices for ASP.NET Core: resource naming, HTTP semantics, status codes, ProblemDetails, pagination, ETags, idempotency and versioning.

15 min read

ASP.NET CoreAdvanced

YARP: Build Reverse Proxies and API Gateways in .NET

Build reverse proxies and API gateways with YARP, covering routes, clusters, transforms, load balancing, health checks, session affinity and the BFF pattern.

15 min read

C#Intermediate

Nullable Reference Types in C#: A Practical Guide

Master C# nullable reference types: flow analysis, annotations, the ! operator, nullable attributes, generics and migrating large codebases incrementally.

15 min read

Interview Questions 10

ArchitectureArchitect

Clean, Onion and Hexagonal Architecture Interview Questions

Architect-level interview questions on Clean, Onion and Hexagonal Architecture covering the dependency rule, ports and adapters and vertical slices.

10 questions · 16 min read

ASP.NET CoreArchitect

API Gateway and Backend-for-Frontend (BFF) Interview Questions

Architect interview questions on API gateway responsibilities, YARP vs Azure API Management, BFF token security, aggregation and avoiding a gateway monolith.

10 questions · 18 min read

ASP.NET CoreSenior

REST API Design Interview Questions for Senior Engineers

10 senior interview questions on REST API design: idempotency, versioning, cursor pagination, ProblemDetails, PATCH semantics, ETags and governance.

10 questions · 18 min read

Advanced C#Senior

Nullable Reference Types Interview Questions

Senior C# interview questions on nullable reference types, null-state analysis, migration strategy, required members, generics and serialization.

10 questions · 19 min read

Distributed SystemsArchitect

Microservices Design Interview Questions for .NET Architects

Architect-level .NET interview questions on service boundaries, data ownership, API contracts, shared libraries, service templates and independent deployability.

10 questions · 19 min read

Distributed SystemsSenior

Service-to-Service Communication Interview Questions

Senior .NET interview questions on sync vs async calls, REST vs gRPC vs messaging, service discovery, service mesh, mTLS and cross-service latency budgets.

10 questions · 18 min read

SecurityArchitect

API Security Interview Questions for .NET Architects

Architect-level .NET interview questions on the OWASP API Security Top 10, rate limiting, input validation, mass assignment, CORS, mTLS and API keys vs tokens.

10 questions · 18 min read

SecuritySenior