Monitor memory usage in your JavaScript application

A common problem that we often face with JavaScript applications is memory leaks and the overall memory usage of our application. This is a significant problem when building applications that we end up deploying to the cloud either as a serverless function, container, or virtual machine. In such cases, memory usage can become a significant problem by slowing down our application, causing it to crash entirely, or increasing costs.

Therefore, monitoring our JavaScript application's memory usage and setting up a system to track when use goes above a certain threshold is essential. This way, we can always be aware of the performance of our application. In cases of a performance issue, for example, when the memory usage goes above a certain threshold, say 80 percent, we can take immediate action and fix the problem before it becomes a significant issue.

To do so, we have created LogSnag, a powerful event tracking tool that works seamlessly with JavaScript and allows us to track any event in our application in real-time. For example, with LogSnag, we can track our memory usage in real-time and set up a rule to notify our team and us when the memory usage goes above a certain threshold via push notifications. This way, we will always be aware of the performance of our application, and we can take immediate action if needed.

Connect LogSnag to JavaScript

Setting up LogSnag

Sign up for a free LogSnag account.
Create your first project from the dashboard.
Head to settings and copy your API token.

JavaScript code snippets

You can use the following code snippets to track memory usage in your JavaScript application. Please don't forget to replace the YOUR_API_TOKEN with your API token and update the project and channel names.

Using JavaScript with Fetch

var myHeaders = new Headers();
myHeaders.append("Content-Type", "application/json");
myHeaders.append("Authorization", "Bearer YOUR_API_TOKEN");

var raw = JSON.stringify({
  "project": "my-saas",
  "channel": "status",
  "event": "High Memory Usage",
  "description": "Memory usage has exceeded the threshold.",
  "icon": "🚨",
  "notify": true
});

var requestOptions = {
  method: 'POST',
  headers: myHeaders,
  body: raw,
  redirect: 'follow'
};

fetch("https://api.logsnag.com/v1/log", requestOptions)
  .then(response => response.text())
  .then(result => console.log(result))
  .catch(error => console.log('error', error));

Using JavaScript with jQuery

var settings = {
  "url": "https://api.logsnag.com/v1/log",
  "method": "POST",
  "timeout": 0,
  "headers": {
    "Content-Type": "application/json",
    "Authorization": "Bearer YOUR_API_TOKEN"
  },
  "data": JSON.stringify({
    "project": "my-saas",
    "channel": "status",
    "event": "High Memory Usage",
    "description": "Memory usage has exceeded the threshold.",
    "icon": "🚨",
    "notify": true
  }),
};

$.ajax(settings).done(function (response) {
  console.log(response);
});

Using JavaScript with XHR

// WARNING: For POST requests, body is set to null by browsers.
var data = JSON.stringify({
  "project": "my-saas",
  "channel": "status",
  "event": "High Memory Usage",
  "description": "Memory usage has exceeded the threshold.",
  "icon": "🚨",
  "notify": true
});

var xhr = new XMLHttpRequest();
xhr.withCredentials = true;

xhr.addEventListener("readystatechange", function() {
  if(this.readyState === 4) {
    console.log(this.responseText);
  }
});

xhr.open("POST", "https://api.logsnag.com/v1/log");
xhr.setRequestHeader("Content-Type", "application/json");
xhr.setRequestHeader("Authorization", "Bearer YOUR_API_TOKEN");

xhr.send(data);

JavaScript integration details

LogSnag is a powerful and flexible event tracking tool that works surprisingly well with JavaScript applications. It provides powerful features such as real-time event tracking, cross-platform push notifications, user and product journeys, charts and analytics, and more.

Connect LogSnag to your JavaScript application in minutes and start tracking events in real-time. LogSnag provides a generous free plan to get you started with event tracking. You can also check out our pricing page to see our paid plans. So please give us a try and let us know what you think!

Other use-cases for LogSnag

View all common use-cases with JavaScript

Setting up LogSnag

JavaScript code snippets

JavaScript integration details

Other use-cases for LogSnag

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