At Fanout we are working on a generalized version of #2. Essentially low-level long-lived connection handling at the edge, to be used for arbitrary high level p

At Fanout we are working on a generalized version of #2. Essentially low-level long-lived connection handling at the edge, to be used for arbitrary high level protocols. Just the other day, we built a chat demo using Fly.io as the FaaS backend. Maybe you find it interesting: http://flychat.fanoutapp.com/ http://flychat.fanoutapp.com/ (code: https://github.com/fanout/flychat https://github.com/fanout/flychat) The chat demo uses SSE. In theory the same architecture could be used to create a GraphQL service with subscriptions.