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Conditional update fallback#438

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petermyers wants to merge 4 commits intomasterfrom
conditional-update-fallback
Open

Conditional update fallback#438
petermyers wants to merge 4 commits intomasterfrom
conditional-update-fallback

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@petermyers petermyers commented Feb 18, 2026

Allows a rule using the update flavor / updateDynamoDB sink to provide a toFallbackUpdateRequest that gets run against DDB only if the original updateRequest failed with a ConditionalCheckFailedException resulting in the DDB connector returning {}.

Use case - we receive a full state event for some record that fails because its timestamp is older than existing record. However, we DO still want PART of that data, perhaps it is full state + some additional fixed metadata specific to the eventing external system that we still want to store.

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