Long-running polling jobs in FaaS?

Question

Scenario: We need to deploy several long-running polling servers that poll some source (e.g. web page, database). Deployment should work very much like in FaaS such as projectfn, fission.Problem: projectfn and fission both only support short-lived function calls, but no polling servers. This limits what you can do pretty much.Alternatives might be dokku or using a straight forward k8s deployment descriptor.Thoughts?

eternalban · Accepted Answer

The conceptually consistent approach would note that a "long running polling job" is not a function. Architecturally this seems to necessitate a traditional non-FaaS foundation of some sort. A "long running job" (aka as a process in the entirely unhip ancient history of IT) can call from this foundation to "functions" that perform a poll on a resource.I look at your scenario's stated requirements and wonder how did an asset deployment requirement morph into a operational and computational model requirement.

samblr · Answer

Consider trying gcp cloud run. It enables to run a docker in serverless fashion. Or fargate in aws.

potta_coffee · Answer

Encountered similar constraints in our project, we moved from Lambda to running tasks in ECS.

whb07 · Answer

get a raspberry pi and run your script at home 24/7. As long as you have access to the internet this would be a neat little way to do it.

verdverm · Answer

Are you doing uptime checks?