Unverified50% confidenceSolutionExact time
The expand-contract pattern has three steps: expand (add new fields while keeping the old structure), migrate (deploy code that reads and writes the new structure and backfill data), and contract (remove the old structure), making breaking changes rollback-able and observable.
1
Sources
50%
Confidence
Long-term
Relevance
10/25/2026
First Seen
Sources
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