The solution to the problem is to extend the HostOptions.ShutdownTimeout configuration value to be longer than 5s, using the standard ASP.NET Core IOptions configuration system.

In .NET core microsoft has added new template worker service for running background jobs.

I describe how to run Quartz.NET jobs using an ASP.NET Core hosted service. I show how to create a simple IJob, a custom IJobFactory, and a QuartzHostedService that runs jobs while your application is running. I'll also touch on some of the issues to aware of, namely of using scoped services inside singleton classes.

Workflow Core is a lightweight workflow engine targeting .NET Standard. Think long-running processes with multiple tasks that need to track state. It supports pluggable persistence and concurrency providers to allow for multi-node clusters.

You've long been able to write Windows Services in .NET and .NET Core, and you could certainly write a vanilla Console App and cobble something together for a long-running headless service as well. However, the idea of a Worker Process, especially a long-running one is a core part of any operating system - Windows, Linux, or Mac.

Learn how to create background services in .NET Core using the Generic Host. The Generic Host provides cross-cutting concerns that you're familiar with in ASP.NET Core, such as dependency injection, logging and configuration. This allows you to build long-running processes for non-HTTP scenarios.