小编hea*_*hen的帖子

我对Elixir和Phoenix Framework很新,所以可能我的问题有点愚蠢.

我有一个应用程序,Elixir + Phoenix Framework作为后端,Angular 2作为前端.我使用Phoenix Channels作为前端/后端交换的渠道.我发现了一个奇怪的情况:如果我从后端向前端发送大量数据,那么特定的通道进程内存消耗就会达到数百MB.即使在传输结束后,每个连接(每个通道进程)也会占用大量内存.

以下是来自后端频道说明的代码段:

defmodule MyApp.PlaylistsUserChannel do
  use MyApp.Web, :channel

  import Ecto.Query

  alias MyApp.Repo
  alias MyApp.Playlist

  # skipped ... #

  # Content list request handler
  def handle_in("playlists:list", _payload, socket) do 
    opid = socket.assigns.opid + 1
    socket = assign(socket, :opid, opid)

    send(self, :list)
    {:reply, :ok, socket}
  end

  # skipped ... #        

  def handle_info(:list, socket) do

    payload = %{opid: socket.assigns.opid}

    result =
    try do
      user = socket.assigns.current_user
      playlists = user
                  |> Playlist.get_by_user
                  |> order_by([desc: :updated_at])
                  |> Repo.all …