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Browser Real-User Monitoring (Browser RUM) allows you to see how your web application is performing from the point of view of a real or synthetic end user. You can answer questions like:

You can drill into the data to explore how users experience your application in their web browsers.

Monitor your Application

Browser RUM offers multiple ways to look at your data in real time. You can: 

For more information on using Browser RUM, see Monitor Your Applications with Browser RUM.

How It Works

The JavaScript Agent is made of up two small JavaScript files, adrum.js and adrum-ext.js.

  1. The file adrum.js is injected into each instrumented page, as close to the top as possible, as the page is served. Although it loads synchronously, it's a very small file, around 30 KB (10 to 12 KB with compression), and generally, executes in less than 5 ms in modern browsers and less than 15 ms in older browsers.
  2. This first JavaScript file starts a timer and does some quick configuration and setup.
  3. At the onload event, adrum-ext.js is fetched asynchronously, specifically to not block the page from loading. This is the code that does most of the heavy lifting. Once it has been fetched, it is cached for 24 hours on the browser. 
  4. When cross-domain session correlation is enabled, the first time a user visits a domain, the browser additionally loads the file adrum-xd.html to generate or load a piece of common information that enables cross-domain sessions. Future visits will not load adrum-xd.html again.
  5. When the page has completed loading, the collected data is bundled into a beacon and sent to the EUM Cloud by adrum-ext.js
  6. The data is processed by the EUM Cloud and then made available for pickup by the Controller.

For more detailed information, check out the video below.

Watch the Video

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For full-screen viewing, click Start Monitoring with Browser Real User Monitoring (RUM)

Set Up and Configure Browser RUM

Browser RUM is easy to set up. It is also highly configurable. You can:

License and Enable Browser Monitoring

Browser Real-User Monitoring requires a separate license and must be enabled before it is available for use.

For information about licensing, including a description of the types of licenses, Lite and Pro, see Browser RUM Licenses.

For information on enabling or disabling Browser RUM, see Enable and Disable Browser RUM.