A C# service can compile while still hiding swallowed exceptions, leaked file handles, and overly complex methods. Build a practical pull request quality gate with focused refactoring, specific exception handling, deterministic disposal, code metrics, repository-level analyzers, and build failures for rule violations.
Refactor a booking workflow that mixes object construction, provider selection, media loading, and notifications. The solution applies Builder, Factory, Proxy, Command, Publisher/Subscriber, and dependency injection only where each pattern removes a specific maintenance problem.
Learn how to split conflicting customer concepts into bounded contexts, model business rules with aggregates and value objects, and use Onion Architecture, repositories, CQRS, and domain events to keep a growing .NET system maintainable.
Build a layered .NET testing strategy that combines TDD, xUnit, Moq, controlled ASP.NET Core tests, BDD acceptance scenarios, and Selenium checks so a passing unit suite also protects real user workflows.
Refactor a synchronous delivery workflow so services own their data, publish asynchronous updates, reject duplicate messages, and use Polly retries, circuit breakers, rate limits, and timeouts without allowing one dependency failure to congest the whole system.
Refactor an over-fetching event catalog endpoint by isolating the EF Core driver, projecting LINQ directly into DTOs, loading aggregates only for writes, inspecting generated queries, and using explicit transactions when a read and update must remain consistent.
Refactor a .NET worker so RabbitMQ stores jobs durably, Protobuf keeps message contracts compact and compatible, manual acknowledgments prevent silent loss, and idempotency protects business data when failed deliveries are retried.
Refactor a travel package API so a changed destination model does not break older clients. Use resource-based routes, URI versioning, additive DTO evolution, OpenAPI documents, JWT authorization, and typed HttpClient proxies to run old and new contracts side by side.
Refactor a growing catalog frontend into clear ASP.NET Core MVC, CQRS, domain, and EF Core boundaries while keeping authentication centralized, authorization local, controllers thin, and cross-service updates reliable.
Build an authenticated Blazor WebAssembly booking editor that validates a flattened ViewModel, repeats security checks on the server, sends bearer tokens through an authorization-aware HttpClient, redirects after token loss, and loads route-dependent data at the correct component lifecycle stage.