Frecuency to invoke a web service

RE: Frecuency to invoke a web service

Vincenzo Reggina — Thu, 27 Jan 2022 16:16:33 GMT

The minimum time can you start a process is 5 minutes, i suggest to create an utility process will to be deleted after completition.
In this model, you can call, with MNI (or similar) a process every X time, X determined with a timer and a specific expression.

obviously the process have to be completed before 5 minutes.

I hope to gave you an idea.

RE: Frecuency to invoke a web service

Stewart Burchell — Wed, 26 Jan 2022 10:01:20 GMT

I have to say that I hate the "polling" pattern with a vengeance. It doesn't scale well and subjects you to conflicting priorities (trying to minimize the frequency of the calls versus the time-sensitivity of the business process).,

It would be ideal to set up an API in Appian to receive a call when a file is ready but this is not an option for limitations in the external system

I would challenge this if possible. It's unlikely that it technically can't be done, but it may be a question of time/cost/skills.

On the assumption that you cannot get they system to notify you when the files are ready (an event pattern, which is by far preferable) then the frequency of your calls need to meet the business time sensitivity (what is the longest that it is acceptable to wait before receiving the files) versus reducing the load on the resources that you have (network capacity, application server resources on your Appian platform)

RE: Frecuency to invoke a web service

Stefan Helzle — Wed, 26 Jan 2022 09:49:28 GMT

The minimum time you can start a process model by a timer is 5 minutes.