Production bug fixes (hotfixes)
Diagnosing and fixing bugs straight in production: triaging Bugsnag reports, targeted hotfixes and fast delivery to restore service.
Hotfix
Production
Bugsnag
Ruby on Rails
Hotfix for a production regression: creating a sub-entity from the back-office returned an HTTP 422 in any group owning the 'Avantages' service, while the sub-entity was still created (partial state). Root cause: a double attachment of the service — through an after_create hook and through legacy controller code — triggering the uniqueness validation. Fix: exclude that service from propagation, making the hook the single source of truth, with a regression spec. Illustrates fast incident diagnosis and resolution (Bugsnag reports).