Shiny Mediator & AOT - Zero Reflection, Full Speed

Native AOT, trimming, and iOS’s no-JIT constraint make reflection a liability. Shiny Mediator has gone all-in on source generation, replacing every runtime introspection point with compile-time code. This deep dive walks through each source generator and the design decisions behind them.

What you’ll learn

• How [MediatorSingleton] / [MediatorScoped] attributes replace assembly scanning with compile-time DI registration
• How typed executors eliminate MakeGenericType and Activator.CreateInstance for request dispatch
• The custom JSON serialization source generator that sidesteps the System.Text.Json chaining limitation
• How [ContractKey] generates cache and offline storage keys without property reflection
• How middleware attributes are extracted at compile time so context.GetHandlerAttribute<T>() works without GetCustomAttributes()
• OpenAPI HTTP client generation: contracts, handlers, JSON converters, and DI registration from a single MSBuild item
• ASP.NET endpoint source generation from handler method attributes