Technical Support · E-commerce
Quantis Store Rescue
Emergency rescue of a broken checkout and performance clean-up on an inherited codebase.
Year: 2025Duration: 2 weeksServices: Fixes & Improvements
The challenge
Checkout failed intermittently after an agency handover, and nobody could reproduce the bug.
Our approach
- Error tracking and session replay to reproduce the failure path
- Root cause fixed in payment webhook handling and stock locking
- Performance profiling and removal of blocking scripts
- Regression tests around the checkout flow
Results
0
Failed checkouts after fix
-61%
Page load time
3 days
To first stable release
Technologies
- Debugging
- Profiling
- Refactor
