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Reliability

Resumable DynamoDB snapshots

DynamoDB snapshot config accepts a startAfterKey, an S3 key to resume from, so interrupted snapshots continue without reprocessing completed files.

Large DynamoDB exports can take hours. If a snapshot was interrupted, the only option was to restart from scratch.

DynamoDB snapshot config now accepts a startAfterKey — an S3 key to resume from — so interrupted snapshots can pick up where they left off without reprocessing completed files.

Why this matters

  • Recover from interrupted snapshots without re-running the full export
  • Practical for large DynamoDB tables where restarts are expensive
DynamoDB backfill docs