从node.js http服务器每秒获取请求

Question

是否有一种方式node.js来获得开连接数和每秒请求数从http服务器？

假设以下简单服务器:

http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end("Hello World!");
}).listen(80);

谢谢.

Answer 1

当我想仔细检查数字ab/httperf/wrk/siege报告时,我通常会这样做:

var served = 0;
var concurrent = 0;

http.createServer(function (req, res) {
  concurrent++;
  res.writeHead(200, {'Content-Type': 'text/plain'});
  setTimeout(function() { // emulate some async delay
    served++;
    concurrent--;
    res.end("Hello World!");
  }, 10);
}).listen(80);

setInterval(function() {
  console.log('Requests per second:' + served);
  console.log('Concurrent requests:' + concurrent);
  served = 0;
}, 1000);