nodejs request library, get the response time

Question

Using the nodejs request library: https://github.com/mikeal/request

var request = require(\'request\');
request(\'http://example.com\', function (er         


        

Answer 1

The request library can do timing for you (docs):

request.get({
  url : 'http://example.com',
  time : true
},function(err, response){
  console.log('Request time in ms', response.elapsedTime);
});

As the question implies, you could get issues with the approach of starting a timer, calling request then stopping the timer in the callback:

var start = new Date();
request.get('http://example.com', function(err, response){
  // NOT GOOD
  console.log('Request time plus 5 seconds', new Date() - start);
});
require('sleep').sleep(5); // time-consuming synchronous action