HangFire

Getting Started — Hangfire Documentation
Hangfire works with the majority of .NET platforms: .NET Framework 4.5.1 or later, .NET Core 1.0 or later, or any platform compatible with .NET Standard 1.3. You can integrate it with almost any application framework, including ASP.NET, ASP.NET Core, Console applications, Windows Services, WCF, as well as community-driven frameworks like Nancy or ServiceStack.
https://docs.hangfire.io/en/latest/getting-started/index.html

Set up and getting started

Core Concepts

https://docs.hangfire.io/en/latest/getting-started/aspnet-core-applications.html

Worker Service + Web API - Set up

Methods to trigger tasks

Fire once and Forget
Calling Methods with a Delay
Recurrent Tasks

Cancellation Token
Exceptions
Tracking the Progress
Configuring Job Queues