server-timing-benchmark

Benchmark server-side using Server Timing API

Installation

This package is available on npmjs.org. You can intall via npm command:

$ npm install server-timing-benchmark

Usage

This package supports http/https module and express.

http

const http = require('http');
const serverTimingBenchmark = require('server-timing-benchmark');
 
http.createServer((req, res) => {
  // Enable middelware
  serverTimingBenchmark()(req, res);
 
  // Create benchmarker
  const benchmark = req.benchmark();
 
  // Sync function
  const someFunction = () => {
    return 'response';
  };
  res.end(benchmark('someFunction', someFunction()));
}).listen(8888);

Above server will respond with header:

Server-Timing: someFunction; dur=[ms]

with body of 'response'.

express

const express = require('express');
const serverTimingBenchmark = require('server-timing-benchmark');
 
const app = express();
app.use(serverTimingBenchmark());
app.use((req, res) => {
 
  // Create benchmarker
  const benchmark = req.benchmark();
 
  // Async function
  const promiseFunction = () => {
    return new Promise(resolve => {
        setTimeout(() => resolve('response'), 1000);
    });
  };
 
  promiseFunction()
    .then(benchmark('promiseFunction'))
    .then(data => res.send(data))
  ;
 
  // Or wrap promise function
  // benchmark('promiseFunction', promiseFunction())
  //   .then(data => res.send(data))
  // ;
});
app.listen(8888);

Above server will respond with header:

Server-Timing: promiseFunction; dur=1000

with body of 'response'.

License

MIT

Author

Yoshiaki Sugimoto