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A practical .NET production pattern every Wednesday, explained clearly enough to use at work the next day.
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How the options pattern builds on IConfiguration: DI registration, three lifetimes, validation, and secrets
How .NET layers appsettings.json, environment variables, command-line args, and custom sources into one IConfiguration, then binds it to typed options.
The C# 14 and .NET 10 features that earn their place in production: field, null-conditional assignment, extension members, Minimal API validation, and SSE.
Return consistent API errors in .NET with ProblemDetails: the RFC 9457 fields, Results.Problem, ValidationProblemDetails, and IExceptionHandler.
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