javascript - 每秒从 node.js http 服务器获取请求

Question

node.js 是否有办法从 http 服务器获取打开的连接数和每秒请求数？

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);