小编ped*_*res的帖子

我有一个应用程序,我从服务器顺序下载mp3文件,暂时将它们存储在我的服务器中,然后直接将它们流式传输到客户端,如下所示:

function downloadNextTrack(){
  var request = http.get('http://mp3server.com', function(response){
    response.on('data', function(data) {
      fs.appendFile('sometrack.mp3', data, function (err) {});
    });
    response.on('end', function(){
      streamTrack('sometrack.mp3');
    }
  });
};

var clients = []; // client response objects are pushed to this array when they request the stream through a route like /stream.mp3

var stream;

function streamTrack(track){
  stream = fs.createReadStream(track);
  stream.on('data', function(data){
    clients.forEach(function(client) {
      client.write(data);
    });
  });
  stream.on('end', function(){
    downloadNextTrack(); // redoes the same thing with another track
  }
};

显然这段代码创建了许多缓存,这些缓冲区没有被操作系统释放,当我运行'free -M'命令时,这就是我得到的(运行应用程序大约4个小时后):

                   total      used       free     shared    buffers …