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k-msg

KR B2B Retention Policy

k-msg provides a KR B2B retention preset for messaging operations.

Default retention windows (KR preset)

Section titled “Default retention windows (KR preset)”
  • Operational logs (opsLogs): 90 days
  • Telecom metadata (telecomMetadata): 365 days
  • Billing evidence (billingEvidence): 1825 days

Policy priority

Section titled “Policy priority”
  1. Tenant contract terms (including early deletion)
  2. Product preset policy
  3. Legal baseline defaults

This means stricter tenant deletion requirements take precedence when configured.

Schema and operations

Section titled “Schema and operations”
  • Standard columns: retention_class, retention_bucket_ym
  • Postgres/MySQL: partition DDL templates
  • SQLite/D1: bucket-index chunk delete with equivalent semantics
Section titled “Recommended implementation”
  • Keep OTP/message body short-lived (1~7 days) and purge
  • Never log plaintext; emit masked values only
  • Prefer bucket/partition cleanup over bulk row deletes

Reference: