Ticketmaster Taylor Swift 'Eras Tour' presale crash
Ticketmaster's site crashed repeatedly and left many fans stranded in hours-long queues during a presale for Taylor Swift's Eras Tour, forcing cancellation of the planned general public sale and triggering a US Department of Justice antitrust probe into Ticketmaster's parent company.
The damage was public. The root cause was preventable.
Ticketmaster's site crashed repeatedly and left many fans stranded in hours-long queues during a presale for Taylor Swift's Eras Tour, forcing cancellation of the planned general public sale and triggering a US Department of Justice antitrust probe into Ticketmaster's parent company.
What the software actually got wrong
Ticketmaster's ticketing platform could not handle the unprecedented volume of simultaneous demand, and roughly 15% of site interactions failed outright, including some that caused fans to lose tickets they had already been queued for.
Ticketmaster's ticketing platform could not handle the unprecedented volume...
Ticketmaster's ticketing platform could not handle the unprecedented volume of simultaneous demand
Requs AI Edge Case flags this exact pattern at the requirements and architecture stage — before a single line of code implementing it exists — so the assumption behind it gets challenged while it is still cheap to fix.
Roughly 15% of site interactions failed outright, including some...
roughly 15% of site interactions failed outright, including some that caused fans to lose tickets they had already been queued for
Requs AI Software FMEA traces this failure mode back to the system-level hazard it feeds, tagging it against the Common Defect Enumeration so it surfaces in review instead of in the field.
Beyond code coverage and "shall" testing
Root causes like this one rarely show up in code coverage or requirements-compliance testing, because nobody wrote a requirement anticipating the specific edge case that broke. Requs AI Edge Case and Requs AI Software FMEA are built to surface exactly this class of overlooked failure mode — before the software is written.
Surfaces this before code exists
Identifies edge cases like this one at requirements and architecture time, using the Common Defect Enumeration to catalog failure patterns seen across hundreds of real-world software failures — including this one.
Connects the failure mode to the hazard
Traces this class of root cause directly to the system-level hazard it can produce, so a defect pattern like this one gets flagged during design review instead of after it ships.
Find the overlooked root causes before they ship.
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