SSE has been extremely useful for my purposes. And the issues with scaling it are similar in nature to scaling and getting a similar feature set out of any solu

SSE has been extremely useful for my purposes. And the issues with scaling it are similar in nature to scaling and getting a similar feature set out of any solution. But in terms of speed to PoC/MVP nothing has been as easy as SSE. The final reasoning is that it can easily be inspected, debugged, curl'd, and so forth. Not sure how often this is done, but I've been sending query parameters along with the request and using it to stream results back to the client for low-latency initial responses to long-running API calls.