@betit/orion/benchmark/nats_reqres.js

Pluggable microservice framework

const orion = require('..');

const codec = new orion.MsgPackCodec();

const opts = { encoding: 'binary' };
const server = require('nats').connect(opts);
const client = require('nats').connect(opts);

///////////////////////////////////////
// Request Performance
///////////////////////////////////////

const loop = 100000;
const hash = 1000;
let received = 0;

console.log('Request Performance Test');

server.on('connect', () => {

  let start = new Date();

  server.subscribe('echo', (msg, reply) => {
    const req = codec.decode(msg);
    const res = codec.encode(req);
    server.publish(reply, res);
  });

  server.flush(() => {
    const req = codec.encode({ a: 2, b: 3 });
    for (let i = 0; i < loop; i++) {
      client.request('echo', req, {
        max: 1
      }, msg => {
        const res = codec.decode(msg);
        received += 1;
        if (received === loop) {
          let stop = new Date();
          let rps = parseInt(loop / ((stop - start) / 1000));
          console.log('\n' + rps + ' request-responses/sec');
          let lat = parseInt(((stop - start) * 1000) / (loop * 2)); // Request=2, Reponse=2 RTs
          console.log('Avg roundtrip latency: ' + lat + ' microseconds');
          process.exit();
        } else if (received % hash === 0) {
          process.stdout.write('+');
        }
      });
    }
  });
});