[mbrevda1]

I'd argue against long/persistent polling. Webhooks allows for zero resource usage until a message needs to be delivered.

[zimpenfish]

> Webhooks allows for zero resource usage until a message needs to be delivered.

Doesn't that only work in the case where the server treats each webhook delivery as ephemeral? If you're keeping a queue to allow reliable / repeatable delivery, that's definitely not "zero resource usage", right?

[kissgyorgy]

On the sender side, sure. On the receiver side? You have to have a service listening 0-24.