We have a third party system which sends a notification to one of our endpoints in Appian at random times and wont wait for any response from us.
Our concern is that we will miss some of these notifications if Appian is down for an upgrade / maintenance as all nodes will become unavailable even if we are on HA config and there is no queueing OOB for Appian to capture these API calls (which does make sense as APIs typically needs to send a response back when ever called)
I cant go to the third party system to create a queueing system and retry them after some time once Appian is available.
I am looking for some ideas to handle this in Appian.
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This will require some sort of middleware as Appian is down and cannot react in any way.
Thanks Stefan Helzle .