websocket - Ways for notifying about result of a short background task

Question

A user can trigger a task that takes approximately 5 seconds. What are the pros and cons of each of the ways to notify him about the response in terms like scalability, memory, resources and performance?

1. Websocket
2. Polling in order to check if the task is done(maybe every second)
3. One request, waiting until the task is finished and then return the result(Long polling).

As I understand, for a longer task Websocket has more advantages, because the initialization overhead is small compared to the duration of the task, but in this case it is different.

Answer 1

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