Web App performance benchmarking – Realtime and End-to-End

OK, last night was thinking of benchmark performance of each component of web app, e.g. client, app server and data services.
There are great APM available in the market which gives you a good amount of information to start with, but still, I was thinking something is missing and want more. APM I tried and used is AppDynamics.

So now what is more we want, AppDynamics provides the analytics capabilities but it comes with the cost.šŸ˜ So what all other open-source tools can help.

ELK: this is the really good centralized log analysis tool which you can configure to meet your expectations. It has an inbuilt search engine(elastic search) and data visualization (Kibana), and to get the logs or data you have LogStash which supports multiple technologies to receive data. Using ELK one can get the high-level health of the application, e.g. success rate of the transaction, average response time, slow performing requests, application usage details etc. With ELK you are covered for application server and data services performance.

In ELK we can push the Apache web access logs which give you visibility to usage and performance of the application.

Using MDC filters one can push the service/method performance details to ELK and yes exception details.

OK all this is configured and available, what next? So we don’t have to keep monitoring logs n data we are capturing we can configure alerts (email) n dashboards. But my recommendation (if you ask šŸ˜Ž) monitor the logs for at least a week to see is your new setup is capturing the details you are expecting n then tweak the configuration accordingly.

Now the challenge is how you can monitor client performance and do we really need to monitor it real time?

My thought is, at least monitor it for pilot release to see how the user is adaptive to your new application and if there are any issues. Even I feel it’s more critical than server performance, as most of your testing, all kind of is done with a controlled environment (machines, network, internet speed, browser types and even user behavior). So to get an answer to the question, how the actual user is using your app n what challenges he is facing? Real time Browser performance metric/log will be a real help.

Thoughts on real-time client component performance and monitoring of web application.

Web App performance benchmarking – Realtime and End-to-End

Formatting Date in JavaScript

You can use built-in JavaScript object Date to do the date formatting in JS, you can also use Locales to format your date. I want to show date in mm/dd/yyyy hh:mm Z, I used simple trick, the format I am expecting is US format, and JS frovides API to convert Date to specific local, so I passed en-US as local parameter, and using options to get the desired output.

few of the options toĀ instantiateĀ Date

var today = new Date(); 
var myDate = new Date(dateString);

where dateString isĀ string representing an RFC2822 or ISO 8601 date format e.g.Ā 12/21/2014Ā 00:00 GMT+5:30

Converting to Local

    var myDate = new Date();
    var options = { timeZoneName: 'short', hour : '2-digit', minute : "2-digit", hour12: false};
    var dateStr = myDate.toLocaleString('en-US', options);

In options, I specified the timeZoneName which specifies if we want a short timezone name or long, hours, minutes and hour12 which specifies if the time needs to be shown in 12 hour format of 24 hours.

Other available options

  • weekday : [“narrow” | “short” | “long”]
  • era: [“narrow” | “short” | “long”]
  • year : [“2-digit” | “numeric”]
  • month : [“2-digit” | “numeric” | “narrow” | “short” | “long”]
  • day : [“2-digit” | “numeric”]
  • hour : [“2-digit” | “numeric”]
  • minute : [“2-digit” | “numeric”]
  • second : [“2-digit” | “numeric”]
  • timeZoneName : [“short” | “long”]

And if you need toĀ format Date to more specific date format, then can use JS Date provided methods to get specific date elements like, day, year, month time etc.

   function padZero(dateArg) {
      if (dateArg < 10) {
        return '0' + dateArg;
      return dateArg;
  function formateDate(date) {
    return date.getUTCFullYear() +
        '-' + padZero(date.getUTCMonth() + 1) +
        '-' + padZero(date.getUTCDate()) +
        ' ' + padZero(date.getUTCHours()) +
        ':' + padZero(date.getUTCMinutes()) +
        ':' + padZero(date.getUTCSeconds()) ;

JSFiddle Code link

Formatting Date in JavaScript