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How could I allow users to schedule sending emails at a specific interval? (self.golang)

submitted 1 week ago by lena to c/golang@programming.dev

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Cross-posted from "How could I allow users to schedule sending emails at a specific interval?" by @lena@gregtech.eu in !learn_programming@programming.dev

Basically, I'm trying to figure out how I could allow a user to send a schedule in the cron syntax to some API, store it into the database and then send an email to them at that interval. The code is at gragorther/epigo. I'd use go-mail to send the mails.

I found stuff like River or Asynq to schedule tasks, but that is quite complex and I have absolutely no idea what the best way to implement it would be, so help with that is appreciated <3

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[–] JustJack23@slrpnk.net 2 points 1 week ago* (last edited 1 week ago)

Depending of how complicated you want it to be of course.

I would implement it by using the basic goroutines, a wait group to keep track of the goroutines and sleep for the recurring duration.

Maybe a more optimal solution would be to use a workerpool.

Also what amount of emails are we talking about and what kind of recurring duration(1/hour or 1/year)