flake-pattern-reference

Terminology note: "flaky test" is a practitioner-emergent term popularized by the Google Testing Blog (google-causes, google-flaky); ISTQB does not maintain a canonical entry. This catalog reflects industry-engineering consensus, not ISTQB authority.

A flake is rarely random - it almost always falls into one of eight recurring patterns. Identifying the pattern early shrinks the bisect search space dramatically. This catalog is a reference, not a workflow; the matching workflow is in flaky-test-quarantine.