Repair Workers KV Negative Cache Expiry Drift

Repair Workers KV Negative Cache Expiry Drift — SYNTHETIC EVIDENCE-LIMITED REVIEW

Case received

Edge readers return 404 after a confirmed new key was written.

Evidence register

• S1: Workers KV key write events and distributed read response timings — PARTIAL / UNVERIFIED.
• S2: approved operating baseline / documented policy — NOT PROVIDED; REQUIRED TO VERIFY.
• S3: timestamped revision or change record — NOT PROVIDED; REQUIRED TO VERIFY.
• S4: accountable reviewer and approval evidence — NOT PROVIDED; REQUIRED TO VERIFY.

Investigation checks

1. Establish the identity, timestamp basis and revision lineage of Workers KV key write events and distributed read response timings; document missing or contradictory records. — PENDING CORROBORATION.
2. Reconstruct the event sequence surrounding negative lookup cache outlives the key creation visibility window, citing exact record identifiers and independent checks. — PENDING CORROBORATION.
3. Compare the evidence with the approved baseline; test the competing explanations for: Edge readers return 404 after a confirmed new key was written. — PENDING CORROBORATION.
4. Draft a non-executing, owner-approved validation sequence and rejection criteria for edge owner bounded read-after-write fixture and cache policy review. — PENDING CORROBORATION.

Deliverables

• time-aligned evidence index for Workers KV key write events and distributed read response timings: DRAFT / INCOMPLETE until inputs are validated.
• exceptions and alternative hypotheses for negative lookup cache outlives the key creation visibility window: DRAFT / INCOMPLETE until inputs are validated.
• approval-gated edge owner bounded read-after-write fixture and cache policy review and verification criteria: DRAFT / INCOMPLETE until inputs are validated.

Decision gate

INCOMPLETE — HUMAN REVIEW REQUIRED. Sources, scope, time basis and sign-off remain unverified. No live change or approval has occurred.