`meeting.started` event send duplicate posts to the #co-working-room

[meg-gutshall]

What Happened?

When a new co-working session is started, many times the zoom-meeting-webhook-handler triggers the meeting.started event twice. Then, when the session is ended, the meeting.ended event is triggered once for the second post in #co-working-room.

Steps to Reproduce

It happens randomly, but evidence of the issue can be seen by scrolling through the #co-working-room Slack channel history.

[jamesrascal]

I am making some assumptions here but I have seen this similar issue when using the slack buttons in messages. The response back from the server needs to happen within 3 seconds or slack will retry, resulting in doubling messages (https://api.slack.com/interactivity/handling#acknowledgment_response). I have seen this issue happen when using a function as a service (like AWS lambda) where the cold start time of the container exceeds the wait time for the slack messages.