Schedule sub worflow to trigger at desired hour

Questions
1

I can’t find a way, some I’m hoping that someone has a solution.

From workflow 1, I’m retrieving a list of dates from an HTTP API. With that result I want to schedule a second workflow to run on certain dates/hours (once only). Is this possible?

So if the results of workflow 1, return (e.g.: ) 2021-04-02T09:00, I want to schedule a another workflow to run at that hour.

Right now I solved this with a a redis database and a 5m polling, but this sounds a bit wasteful of resources, I could save those dates on my GCalendar (I don’t have a calendly account, and I would like to avoid it), but has far as I understand the GCalendar node also polls the events at X interval.

2

In the future we would probably have a wait functionality out of the box.

In the meantime, I would use something like easycron. When their API you can schedule an HTTP request at a specified time that you can catch later with the Webhook node. Maybe the free tier is enough for you use case.

3

Im trying to avoid external services, however that solution is quite easy to implement locally, at least for what I need a simple docker image with a rest api and cron jobs should suffice. Thanks! :smiley: