These steps can be done via the command line or GUI. This will add the JavaScript tag before the closing ‘body’ tag of the html pages served by the ADC. Radar tags can be injected from a Citrix ADC using a rewrite policy and action. Once this is complete, you become a fully fledged member of the Radar community. The radar tag and objects can be served directly from a Citrix ADC with a few simple commands and some cutting and pasting (keep reading to see how). Sometimes the team responsible for site performance – the network team – is forbidden to modify the site content But this is the simplest way to get up and running. Yes, you need to take care to ensure that it does not disrupt web operations and that updates carry the tag forward. JavaScript tags are normally embedded in a web-page itself. The data is anonymised and collated in the real-time Radar database.Ĭitrix does considerable processing on the raw data before it gets used (see Radar Live), but this is, effectively, how Citrix ITM maintains a real-time understanding of the state of the internet.The data is sent to the Citrix ITM platform.The tag initiates requests to each of the platforms, where it retrieves the small radar objects to determine reachability, latency, and, where appropriate, throughput. ITM calculates the data it needs from the user’s region and responds with a number of platforms to test (public clouds, CDNs, private data centers, etc.). When the page has finished loading, the tag “wakes up” and asks Citrix ITM what it would like it to test.When users visit community sites across the internet and download a web page, they receive a small JavaScript tag.The Radar measurement process is simple and follows four basic steps: But how does a tag get onto the web sites and how does know where to test? How the Radar Process Works These bits of embedded code are instrumental to the whole process. When the page is downloaded, the code is run and tells the browser to retrieve various objects, take measurements about the performance, and send that telemetry to Citrix Radar. Tags are small pieces of JavaScript that are embedded in web sites. Users retrieve these objects to measure the reachability, latency, and throughput to each platform. gif files) in the platforms monitored by Citrix ITM. An Overview of Tags and ObjectsĬommunity members have placed objects (small. This blog will cover the basics of how Citrix Radar works and show you how to set your site to be part of the community using Citrix ADC. The answers lie with “tags” and “objects”. What do we mean by real user measurements? How do we achieve this on such a scale? How does the browser of each user actually take these measurements? Citrix Radar takes measurements from about 900 million users across 50,000 ISP networks, resulting in 15 billion data points every day, which enables our customers to ensure their content and applications are always available and their users receive the best experience. This helps Citrix ITM to detect internet outages and service degradations immediately. This blog was co-authored by Jason Poole, Principal Product Marketing Manager at Citrix.Ĭitrix Intelligent Traffic Management (ITM) continuously tests the performance of the internet with real user measurement (RUM) to create a digital user-experience map.
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