Multiple ChoiceIntermediate 45s
Expand-Contract Migration Pattern
The expand/contract pattern for schema change means an implementation change is...
Options
- 1Backward compatible for a transition period, then incompatibility is removed later
- 2Applied instantly in a single atomic step so no intermediate state is exposed
- 3Only done during a maintenance window when the service can be taken offline
- 4Never rolled back, since schema changes are treated as strictly forward-only
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