如何使用httpoison发出异步请求?

这可以通过根据请求生成一个新进程来实现。考虑一下:

notify = fn response ->
  # Any handling logic - write do DB? Send a message to another process?
  # Here, I'll just print the result
  IO.inspect(response)
end

spawn(fn ->
  resp = HTTPoison.get("http://google.com")
  notify.(resp)
end) # spawn will not block, so it will attempt to execute next spawn straig away

spawn(fn ->
  resp = HTTPoison.get("http://yahoo.com")
  notify.(resp)
end) # This will be executed immediately after previoius `spawn`

请看一下 spawn/1 我已经在这里指出了。

希望有帮助!