{
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  "generated_at_utc": "2026-10-16T12:55:40.483Z",
  "record_id": "VXI-EXT-PROCUREMENT-DYNAMODB-TTL-01-v1",
  "record_kind": "external_reference",
  "title": "DynamoDB TTL: Expiry does not prove erasure",
  "system": "Amazon DynamoDB",
  "evidence_family": "vendor_evidence_review",
  "index_status": "PUBLIC_SAFE_SOURCE_REVIEW",
  "evidence_state": "PRIMARY_DOCUMENTATION_REVIEW_ONLY",
  "canonical_question": "Does an expired DynamoDB TTL make a record immediately unavailable?",
  "near_questions": [
    "Can an expired DynamoDB item still be read?",
    "Does TTL delete exactly at the timestamp?",
    "Can an expired item be updated before removal?",
    "What happens if the TTL field is a string?",
    "Which table attribute is configured for TTL?",
    "Do queries filter expired records?",
    "Does a changed timestamp cancel pending expiry?",
    "What identifies a service deletion in Streams?",
    "Are replica deletions a separate consideration?",
    "Does TTL prove backup erasure?",
    "What evidence supports a retention assertion?",
    "Can I save the expiry-versus-deletion boundary?"
  ],
  "supported_claims": [
    {
      "claim": "TTL deletion occurs asynchronously, typically within days. Expired items awaiting deletion can still be updated and appear in reads unless the application filters them. The attribute must have the documented numeric timestamp format. An expired timestamp alone does not establish removal or fulfil an erasure commitment.",
      "reliance": "DOCUMENTED_CAPABILITY_ONLY"
    }
  ],
  "not_demonstrated_claims": [
    "Verified buyer configuration or effective access rights",
    "Independent execution, completeness or security testing",
    "Vendor certification, legal compliance or guaranteed suitability"
  ],
  "public_summary": "TTL deletion occurs asynchronously, typically within days. Expired items awaiting deletion can still be updated and appear in reads unless the application filters them. The attribute must have the documented numeric timestamp format. An expired timestamp alone does not establish removal or fulfil an erasure commitment.",
  "related_record_ids": [],
  "source_review": {
    "source_type": "official_external_documentation",
    "source_title": "DynamoDB time to live",
    "source_url": "https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/TTL.html",
    "checked_on": "2026-10-16",
    "candidate_record_id": "VXI-EXT-PROCUREMENT-DYNAMODB-TTL-01-v1",
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    "revalidation": "The delivered snapshot preserves the review date shown. Recheck current primary documentation and deployment context before relying on present applicability; payment does not trigger fresh research."
  },
  "answer_policy": {
    "classification": "DOCUMENTED_WITH_DEPLOYMENT_BOUNDARY",
    "bounded_answer": "TTL deletion occurs asynchronously, typically within days. Expired items awaiting deletion can still be updated and appear in reads unless the application filters them. The attribute must have the documented numeric timestamp format. An expired timestamp alone does not establish removal or fulfil an erasure commitment.",
    "required_buyer_context": "Table TTL configuration, item attributes, reads, replicas and retained-copy scope. Effective configuration and dated operational evidence have not been inspected.",
    "missing_evidence": "A broader claim needs evidence matching the intended use. Payment does not upgrade the evidence state."
  },
  "private_boundary": "Raw logs, thresholds, private paths, source code, protected mechanisms and reconstruction-level details are excluded from public and paid delivery.",
  "decision_profile": {
    "schema": "varexis-vendor-evidence-review/1",
    "review_status": "documentation_review_only",
    "checked_on": "2026-10-16",
    "claim_to_check": "An expired TTL timestamp proves immediate record deletion.",
    "documented_statement": {
      "status": "documented",
      "statement": "TTL deletion occurs asynchronously, typically within days. Expired items awaiting deletion can still be updated and appear in reads unless the application filters them. The attribute must have the documented numeric timestamp format. An expired timestamp alone does not establish removal or fulfil an erasure commitment.",
      "source_ids": [
        "dynamo-ttl"
      ]
    },
    "buyer_evidence_required": [
      "Table TTL attribute and item value type.",
      "Read filtering and update behaviour.",
      "Deletion evidence and any separately retained copies."
    ],
    "review_condition": {
      "status": "varexis_review_policy",
      "statement": "Require actual deletion evidence for an erasure claim; do not infer it from expiry alone."
    },
    "unknowns": "The buyer configuration, contract, effective entitlement and operational evidence have not been inspected. Missing evidence does not establish absence or failure of the feature.",
    "evidence_sources": [
      {
        "source_id": "dynamo-ttl",
        "url": "https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/TTL.html",
        "final_url": "https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/TTL.html",
        "title": "DynamoDB time to live",
        "checked_on": "2026-10-16",
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        "bytes": 14795
      }
    ],
    "observed_deployment": false,
    "commercial_reliance_boundary": "Procurement evidence support only; no supplier clearance, legal conclusion, configuration audit or verification of the buyer's claim is supplied.",
    "paid_value": {
      "decision_context": "Preserve the evidence needed to challenge an immediate-erasure claim.",
      "free": "Complete review, practical questions, sources and limitations; may be saved locally.",
      "single_request": "Existing server-saved version-bound route snapshot for later authenticated retrieval.",
      "evidence_receipt": "The same snapshot plus the existing unsigned delivery receipt.",
      "excluded": [
        "Fresh vendor research",
        "Continuous monitoring or change alerts",
        "Testing the buyer configuration",
        "Private evidence or vendor certification"
      ],
      "integrity": "Hashes identify content versions; they do not prove truth or provide a signature."
    },
    "revalidation": {
      "trigger": "A saved purchase does not recheck the source or buyer configuration.",
      "specific_watch": "Table TTL configuration, item attributes, reads, replicas and retained-copy scope."
    }
  },
  "paid_access_note": "The full published answer and boundaries are free. Paid access saves the selected route and source versions, with an unsigned receipt when purchased. Preview coverage before paying. Fresh research, bespoke assessment and protected evidence are excluded.",
  "service_route": {
    "request_guide": "/varexis-index/request.html",
    "request_workflow": "/varexis-index/request-workflow.json",
    "service_id": "single_request",
    "service_routes_url": "/varexis-index/service-routes.json",
    "payment_required": true,
    "availability_endpoint": "/api/index/capabilities",
    "operational_status": "AUTOMATIC_SERVICE_CAPABILITIES_GATED",
    "checkout_url": "/index-access"
  },
  "authority_boundary": "VAREXIS-INDEX informs evidence reliance. It does not provide advice, certification, deployment authority, security assurance, production approval, or guarantee.",
  "human_page": "/varexis-index/catalog.html#dynamodb-ttl-expiry-not-erasure",
  "machine_readable_record": "/varexis-index/records/dynamodb-ttl-expiry-not-erasure.json"
}