martinothamar/Mediator

Health v2 · maintenance only

Adoption not part of the score

3719 stars · 182 forks observed · 2026-09-21

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A high-performance .NET implementation of the Mediator pattern built with C# source generators, offering a MediatR-like API. It generates DI registration and monomorphized dispatch code at build time, enabling full Native AOT support without reflection.

Use cases

• decouple request handlers from controllers in ASP.NET Core apps
• replace MediatR for better performance and Native AOT support
• implement CQRS-style commands and queries in .NET
• avoid fat constructors with many injected services
• catch missing handler configuration at build time instead of runtime
• reduce cold start time in serverless and edge deployments

When to choose

• you use the Mediator pattern in .NET and want maximum performance
• you need Native AOT compatibility without reflection
• you want compile-time diagnostics for missing handlers
• you want a stable, semver-strict MediatR alternative

When to avoid

• you need MediatR's extensive ecosystem of pipeline behaviors and integrations
• your project does not use .NET or C#
• you rely on runtime-registered or dynamically discovered handlers
• you need notification/multicast publishing features beyond basic request/response

Facets

library · maturity stable

middleware developer-tools plugin-system developer-tools backend web-development dotnet cross-platform mediator-pattern source-generator mediatr-alternative native-aot dependency-injection cqrs in-process-messaging

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