FastEndpoints

An easy to use Web-Api framework (which encourages CQRS and Vertical Slice Architecture) built as an extension to the Asp.Net pipeline. Performance is on par with .net 6 minimal apis and is 2X faster; uses only half the memory; and outperforms a traditional MVC controller by about 73k requests per second on a Ryzen 3700X desktop.

Try it out...

install from nuget: Install-Package FastEndpoints (currently beta)

note: the minimum required sdk version is .net 6.0 (preview atm)

Code Sample:

Program.cs

using FastEndpoints;

var builder = WebApplication.CreateBuilder();
builder.Services.AddFastEndpoints();
builder.Services.AddAuthenticationJWTBearer("SecretKey");

var app = builder.Build();
app.UseAuthentication();
app.UseAuthorization();
app.UseFastEndpoints();
app.Run();

Request DTO

public class MyRequest
{
    [From(Claim.UserName)]
    public string UserName { get; set; }  //this value will be auto populated from the user claim

    public int Id { get; set; }
    public string Name { get; set; }
    public int Price { get; set; }
}

Request Validator

public class MyValidator : Validator<MyRequest>
{
    public MyValidator()
    {
        RuleFor(x => x.Id).NotEmpty().WithMessage("Id is required!");
        RuleFor(x => x.Name).NotEmpty().WithMessage("Name is required!");
        RuleFor(x => x.Price).GreaterThan(0).WithMessage("Price is required!");
    }
}

Response DTO

public class MyResponse
{
    public string Name { get; internal set; }
    public int Price { get; set; }
    public string? Message { get; set; }
}

Endpoint Definition

public class MyEndpoint : Endpoint<MyRequest>
{
    public ILogger<MyEndpoint>? Logger { get; set; } //automatically injected from services

    public MyEndpoint()
    {
        //no longer hindered by attribute limitations
        Routes("/api/test/{id}");
        Verbs(Http.POST, Http.PATCH);
        Roles("Admin", "Manager");
        Policies("ManagementTeamCanAccess", "AuditorsCanAccess");
        Permissions(
            Allow.Inventory_Create_Item,
            Allow.Inventory_Retrieve_Item,
            Allow.Inventory_Update_Item); //declarative permission based authorization
    }

    protected override async Task HandleAsync(MyRequest req, CancellationToken ct)
    {
        //can do further validation here in addition to FluentValidation rules
        if (req.Price < 100)
            AddError(r => r.Price, "Price is too low!");

        AddError("This is a general error!");

        ThrowIfAnyErrors(); //breaks the flow and sends a 400 error response containing error details.

        Logger.LogInformation("this is your first endpoint!"); //dependency injected logger

        var isProduction = Env.IsProduction(); //read environment
        var smtpServer = Config["SMTP:HostName"]; //read configuration

        var res = new MyResponse //typed response to make integration tests convenient
        {
            Message = $"the route parameter value is: {req.Id}",
            Name = req.Name,
            Price = req.Price
        };

        await SendAsync(res);
    }
}

that's mostly it. all of your Endpoint definitions are automatically discovered on app startup and routes automatically mapped.

Documentation

proper documentation will be available within a few weeks once v1.0 is released. in the meantime have a browse through the Web, Test and Benchmark projects to see more examples.

Benchmark results

Bombardier load test

FastEndpoints (72,920 more requests per second than mvc controller)

Statistics        Avg      Stdev        Max
  Reqs/sec    144989.43   13594.10  199851.96
  Latency        3.41ms   378.95us    65.00ms
  HTTP codes:
    1xx - 0, 2xx - 1462226, 3xx - 0, 4xx - 0, 5xx - 0
    others - 0
  Throughput:    73.34MB/s

AspNet Minimal Api

Statistics        Avg      Stdev        Max
  Reqs/sec    144416.77   14313.21  171576.65
  Latency        3.43ms     1.37ms   347.00ms
  HTTP codes:
    1xx - 0, 2xx - 1456040, 3xx - 0, 4xx - 0, 5xx - 0
    others - 0
  Throughput:    73.02MB/s

AspNet MapControllers

Statistics        Avg      Stdev        Max
  Reqs/sec     74056.92   19197.47  372446.94
  Latency        6.71ms     1.89ms   416.00ms
  HTTP codes:
    1xx - 0, 2xx - 745069, 3xx - 0, 4xx - 0, 5xx - 0
    others - 0
  Throughput:    37.37MB/s

AspNet MVC Controller

Statistics        Avg      Stdev        Max
  Reqs/sec     72069.51   14094.86   96234.73
  Latency        6.83ms   712.49us    89.01ms
  HTTP codes:
    1xx - 0, 2xx - 731659, 3xx - 0, 4xx - 0, 5xx - 0
    others - 0
  Throughput:    36.56MB/s

parameters used: -c 500 -m POST -f "body.json" -H "Content-Type:application/json" -d 10s http://localhost:5000/

BenchmarkDotNet head-to-head results