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industry2026-05-236 min read

Why every balance mutation needs a journal row — the bedrock of SaaS financial audit

When SaaS balances are managed by single-line UPDATEs, "the drift cron caught a discrepancy, but WHICH mutation was wrong?" stays unanswered. thMenu's money-movement journal pre-writes a row with a UNIQUE (entity_kind, entity_id, claim_key) anchor before every balance write — Stripe webhook retries become idempotent. PR #479+#481+#483 K/L/M.

th

thMenu Team

thmenu.com

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