In the past week, the fall semester 2025 started! Many institutions have welcomed new students and the rooms are again full of people, full of life. For those starting their studies, it is a time of change, where they develop new habits, possibly move into a new apartment, and most importantly start learning more deeply about their field of interest.
Tag: Load Testing
Load Testing the edu-ID IdP
On a Monday morning, at the start of the fall semester 2024, many students were unable to log into their edu-ID account. A nightmare for students, IT administrators – and also the edu-ID team who was working actively to fix the issue as soon as possible.
What was the cause of this incident? A retrospective analysis found that the issue was a missing index in a database table. Really, a missing index? Why did we not detect this earlier, even though this problematic table had been in use for several months without any problem? It turns out, we load tested the new MFA API when launching it, but it seems that it wasn’t with a sufficiently large and diverse dataset. Therefore, it was only at semester start that such a high load made the problem apparent.