Approach
Trace state first. Add recovery where state changes.
01
Map state
Trace sources, transforms, model inputs, and downstream dependencies.
02
Locate failure modes
Classify schema drift, partial writes, poison records, and non-idempotent tasks.
03
Version inputs
Bind datasets, feature sets, context, and model inputs to immutable versions.
04
Add replay boundaries
Define re-execution paths with rollback pointers and isolation gates.
05
Prove determinism
Remove hidden time, randomness, mutable dependencies, and environment variance.
The method is deliberately mechanical: identify every state transition, remove hidden mutation, bind each run to immutable inputs, and test rollback before the recovery path is needed.