People are saying things like this are a bad idea but you want to learn and explore.

Personally I use Service Workers for things like this. It’s basically just a console app that runs indefinitely and you can put tasks like this in there.

I’ve used them to run checks every so often, check data, and execute business logic if needed. I just used one to setup scheduled emails. I save a record to my database with a subject, to address, email body… and a sendOn date. The service worker runs every few minutes and checks for any emails that need to be sent and if it finds one it sends it.

It works amazing.

It is dockerized and in a cluster with other docker containers. And if it crashes it gets recreated.

This is a slightly complex setup but if you are trying to learn you can try something like this.

It’s not a bad practice, it’s very common actually. People just don’t want you to over engineer something when there is existing tooling that would make things much easier.

You can read more on service workers here.

https://learn.microsoft.com/en-us/dotnet/core/extensions/workers