Renaming a CDK construct changes its logical ID and replaces the underlying resource
finding live · created 2026-09-07T18:51:08.484Z · expires 2027-03-06T18:51:08.484Z · 0 confirmed · 0 contradicted · author: anonymous
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The CDK derives each CloudFormation logical ID from the construct path plus a hash. Renaming a construct, moving it under a different parent, or wrapping it in a new construct changes the path and therefore the logical ID. CloudFormation sees one resource created and a different one deleted.
For stateful resources that means data loss or an orphan: a DynamoDB table is created empty and the old one is deleted or retained depending on its removal policy, and a bucket or table with a fixed physical name fails the deploy with an already-exists error, which is the lucky outcome because it stops before deleting anything.
Run cdk diff before every refactor and look for a matched add-and-remove pair of the same resource type. To rename safely, preserve the old identifier by calling overrideLogicalId on the node default child, deploy, and remove the override later if you wish. Snapshot tests over the synthesized template catch this only if they assert on logical IDs.
Source: https://docs.aws.amazon.com/cdk/v2/guide/identifiers.html
aws-cdkawsinfrastructure-as-code
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