LinkDotNet.NCronJob 2.4.6

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Additional Details

The repository and package moved to a new organization and name. Use NCronJob instead!
Read more about this in our announcement:

dotnet add package LinkDotNet.NCronJob --version 2.4.6                
NuGet\Install-Package LinkDotNet.NCronJob -Version 2.4.6                
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="LinkDotNet.NCronJob" Version="2.4.6" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add LinkDotNet.NCronJob --version 2.4.6                
#r "nuget: LinkDotNet.NCronJob, 2.4.6"                
#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.
// Install LinkDotNet.NCronJob as a Cake Addin
#addin nuget:?package=LinkDotNet.NCronJob&version=2.4.6

// Install LinkDotNet.NCronJob as a Cake Tool
#tool nuget:?package=LinkDotNet.NCronJob&version=2.4.6                

<h1 align="center">NCronJob</h1>

<p align="center"> <img src="assets/logo_small.png" alt="logo" width="120px" height="120px"/> <br> <em>Scheduling made easy</em> <br> </p>

.NET NuGet NuGet


A Job Scheduler sitting on top of IHostedService in dotnet.

Often times one finds themself between the simplicity of the BackgroundService/IHostedService and the complexity of a full-blown Hangfire or Quartz scheduler. This library aims to fill that gap by providing a simple and easy to use job scheduler that can be used in any dotnet application and feels "native".

So no need for setting up a database, just schedule your stuff right away! The library gives you two ways of scheduling jobs:

  1. Instant jobs - just run a job right away (or with a small delay; or with a given date and time)
  2. Cron jobs - schedule a job using a cron expression

The whole documentation can be found here: NCronJob Documentation


  • The ability to schedule jobs using a cron expression
  • The ability to instantly run a job
  • Parameterized jobs - instant as well as cron jobs!
  • Integrated in ASP.NET - Access your DI container like you would in any other service
  • Get notified when a job is done (either successfully or with an error).
  • Retries - If a job fails, it will be retried.
  • The job scheduler supports TimeZones. Defaults to UTC time.
  • Minimal API for Jobs - implement jobs in an oneliner

Not features

As this is a simple scheduler, some features are not included by design. If you need these features, you might want to look into a more advanced scheduler like Hangfire or Quartz.

  • Job persistence - Jobs are not persisted between restarts of the application.
  • Job history - There is no history of jobs that have been run.
  • Progress state - There is no way to track the progress of a job. The library will support notifying when a job is done, but not the progress of the job itself.

Short example

There are two ways of defining a job.

Minimal Job API

You can use this library in a simple one-liner:

builder.Services.AddNCronJob((ILoggerFactory factory, TimeProvider timeProvider) =>
    var logger = factory.CreateLogger("My Anonymous Job");
    logger.LogInformation("Hello World - The current date and time is {Time}", timeProvider.GetLocalNow());
}, "*/5 * * * * *");

With this simple lambda, you can define a job that runs every 5 seconds. Pass in all dependencies, just like you would with a Minimal API.

Via the IJob interface

  1. Import the namespace (or let your IDE do the dirty work)
using LinkDotNet.NCronJob;
  1. Create a job
public class PrintHelloWorld : IJob
    private readonly ILogger<PrintHelloWorld> logger;

    public PrintHelloWorld(ILogger<PrintHelloWorld> logger)
        this.logger = logger;

    public Task RunAsync(JobExecutionContext context, CancellationToken token)
        logger.LogInformation("Hello World");
        logger.LogInformation("Parameter: {Parameter}", context.Parameter);

        return Task.CompletedTask;
  1. Register the NCronJob and the job in your Program.cs
builder.Services.AddNCronJob(options =>
    options.AddJob<PrintHelloWorld>(j => 
        // Every minute and optional parameter
        j.WithCronExpression("* * * * *")
         .WithParameter("Hello World");
  1. Run your application and see the magic happen

Triggering an instant job

If the need arises and you want to trigger a job instantly, you can do so:

public class MyService
  private readonly IInstantJobRegistry jobRegistry;
  public MyService(IInstantJobRegistry jobRegistry) => this.jobRegistry = jobRegistry;

  public void MyMethod() => jobRegistry.RunInstantJob<MyJob>("I am an optional parameter");

Support & Contributing

Thanks to all contributors and people that are creating bug-reports and valuable input:

<a href=""> <img src="" alt="Supporters" /> </a>

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 is compatible. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
2.4.6 377 5/21/2024
2.4.5 245 5/20/2024
2.4.4 87 5/20/2024
2.4.3-preview 78 5/20/2024
2.4.1-preview 76 5/18/2024
2.4.0-preview 90 5/8/2024
2.3.2 208 5/8/2024
2.3.1 100 5/7/2024
2.3.0-preview 95 5/7/2024
2.2.1 111 5/5/2024
2.2.0-preview 104 5/4/2024
2.1.4 112 5/1/2024
2.1.3-preview 88 4/30/2024
2.1.2-preview 85 4/28/2024
2.1.1-preview 82 4/27/2024
2.1.0-preview 86 4/25/2024
2.0.5 241 4/19/2024
2.0.4 121 4/16/2024
2.0.3 103 4/15/2024
2.0.2-preview 83 4/15/2024
2.0.1-preview 85 4/15/2024
2.0.0-preview 116 4/14/2024
1.0.2 212 4/11/2024
1.0.1-preview 95 4/10/2024
1.0.0-preview 80 4/10/2024
0.13.2 120 3/29/2024
0.13.1 163 3/25/2024
0.13.0 130 3/23/2024
0.12.0 124 3/22/2024
0.11.5 102 3/22/2024
0.11.4 107 3/21/2024
0.11.3 94 3/21/2024
0.11.2-preview 83 3/21/2024
0.11.1-preview 77 3/21/2024
0.11.0-preview 95 3/21/2024
0.10.1 115 3/19/2024
0.10.0 116 3/18/2024
0.9.3 102 3/18/2024
0.9.2 110 3/17/2024
0.9.1 103 3/17/2024

Changes in NCronJob

### Fixed

- Retry/Concurrency Attributes where ignored

See the full changelog at