Koto.Application 0.1.0-preview.3

.NET 10.0 This package targets .NET 10.0. The package is compatible with this framework or higher.
This is a prerelease version of Koto.Application.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package Koto.Application --version 0.1.0-preview.3
                    


                    

                
NuGet\Install-Package Koto.Application -Version 0.1.0-preview.3
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Koto.Application" Version="0.1.0-preview.3" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Koto.Application" Version="0.1.0-preview.3" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Koto.Application" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Koto.Application --version 0.1.0-preview.3
                    


                    

                
#r "nuget: Koto.Application, 0.1.0-preview.3"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Koto.Application@0.1.0-preview.3
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Koto.Application&version=0.1.0-preview.3&prerelease
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Koto.Application&version=0.1.0-preview.3&prerelease
                    


                            Install as a Cake Tool

Koto.Application

CQRS dispatcher, pipeline behaviors, and cross-service integration abstractions for .NET microservices. Part of the Koto suite.

Install

dotnet add package Koto.Application

What's included

Type Purpose
ICommand / ICommand<TResult> Marker interfaces for write operations
IQuery<TResult> Marker interface for read operations
ICommandHandler<T> / ICommandHandler<T, TResult> Command handler contracts
IQueryHandler<TQuery, TResult> Query handler contract
ICqrsDispatcher Dispatches commands and queries to registered handlers
IPipelineBehavior<TRequest, TResponse> Middleware for the CQRS pipeline
LoggingBehavior<,> Logs every command/query with timing
TransactionBehavior<,> Wraps each command in a IUnitOfWork transaction
IUnitOfWork Abstraction for committing a database transaction
IIntegrationEvent / IntegrationEvent External event contract
IIntegrationCommand / IIntegrationCommand<TResult> Cross-service command contract
IIntegrationEventPublisher Publishes integration events (implemented in infra)
IIntegrationCommandDispatcher Dispatches integration commands (implemented in infra)

Usage

Register

builder.Services.AddKotoApplication(typeof(Program).Assembly);

Implement a command

public sealed record PlaceOrderCommand(Guid CustomerId, List<OrderItem> Items)
    : ICommand<Result<OrderId>>;

public sealed class PlaceOrderHandler : ICommandHandler<PlaceOrderCommand, Result<OrderId>>
{
    public async Task<Result<OrderId>> Handle(PlaceOrderCommand cmd, CancellationToken ct)
    {
        // business logic
    }
}

Dispatch

var result = await _dispatcher.SendAsync(new PlaceOrderCommand(customerId, items), ct);

Pipeline behaviors

// Register in DI — executed in registration order
services.AddScoped(typeof(IPipelineBehavior<,>), typeof(LoggingBehavior<,>));
services.AddScoped(typeof(IPipelineBehavior<,>), typeof(ValidationBehavior<,>)); // from Koto.Validation
services.AddScoped(typeof(IPipelineBehavior<,>), typeof(TransactionBehavior<,>));

Design notes

  • IDomainEvent — internal; free to change; never crosses service boundaries.
  • IIntegrationEvent — external contract; versioned; published to Kafka via Wolverine.
  • IIntegrationCommand — fire-and-forget command to another service; IIntegrationCommand<TResult> expects a reply.
Product Compatible and additional computed target framework versions.
.NET net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (7)

Showing the top 5 NuGet packages that depend on Koto.Application:

Package Downloads
Koto.Messaging.Wolverine

Wolverine-based implementation of Koto messaging abstractions: integration event publishing, command dispatching, Kafka consumers with idempotency, correlation propagation, and DLQ routing.
Koto.Validation

FluentValidation extensions for Koto: MustBeValueObject, MustBeEntity, ListMustContainNumberOfItems, and ValidationBehavior pipeline integration.
Koto.EventSourcing.Marten

Event Sourcing on PostgreSQL via Marten 8: EventSourcedAggregateRoot, event-sourced repository, inline and async projections.
Koto.Api.FastEndpoints

FastEndpoints integration for Koto: CQRS base endpoints, RFC 7807 Problem Details from Error, correlation ID middleware, and global exception handler.
Koto.Infrastructure.EFCore

EF Core 10 integration for Koto DDD: generic repository, strongly-typed ID converters, specification pattern, and Wolverine outbox wiring.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
0.4.0 197 7/21/2026
0.3.0-preview.15 97 7/21/2026
0.3.0-preview.14 90 7/21/2026
0.3.0-preview.13 89 7/21/2026
0.3.0-preview.12 88 7/21/2026
0.3.0-preview.11 89 7/21/2026
0.3.0-preview.10 91 7/21/2026
0.3.0-preview.9 94 7/21/2026
0.3.0-preview.8 85 7/21/2026
0.3.0-preview.7 82 7/21/2026
0.3.0-preview.6 80 7/20/2026
0.3.0-preview.5 80 7/19/2026
0.3.0-preview.4 83 7/19/2026
0.3.0-preview.3 100 7/11/2026
0.3.0-preview.2 87 7/11/2026
0.3.0-preview.1 89 7/3/2026
0.2.0-preview.1 96 6/28/2026
0.1.0-preview.5 88 5/13/2026
0.1.0-preview.4 83 5/13/2026
0.1.0-preview.3 77 5/13/2026
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