OutSystems uses the APDEX (Application Performance Index) metric, to measure the user satisfaction with the performance of your applications.
How to Interpret an APDEX Score
Your applications are rated from 0% to 100%:
- 0%-70% - the application provides a poor user experience for being slow;
- 70%-85% - the application provides a fair user experience for being fairly slow;
- 85%-100% - the application provides a good user experience, since it's fast.
If there is no data about an application, OutSystems displays a hyphen (-).
How an APDEX Score is Calculated
Each time the end-user navigates to a page in your application, OutSystems checks how long the page took to load. If the page loads in:
More than 8 seconds - it provides a poor user experience, because it's slow;
2-8 seconds - it provides a fair user experience, because it's fairly slow;
Less than 2 seconds- it provides a good user experience, because it's fast.
To calculate the APDEX score of an application, we use the following formula:
This scores an application with:
- 0% if all page loads were slow, i.e. took more than 8 seconds;
- 50% if all page loads were fairly slow, i.e. took between 2 and 8 seconds;
- 100% if all page loads were fast, i.e. took less than 2 seconds.
You can learn more about this industry standard at www.apdex.org.