Why Your SaaS Balance is Lying to You: Designing an Immutable Financial Ledger in TypeScript and PostgreSQL
This story is from 2026-10-13. It is preserved in the archive; the latest stories are on the live feed.
If you run a software-as-a-service (SaaS) platform, an e-commerce marketplace, or a fintech app, take a hard look at how you manage account balances in your database. If your code relies on updating a column—something like UPDATE accounts SET balance = balance + 100 WHERE id = 'acc_123' —you are si…
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- 2026-10-13 20:00 · DEV Community — AI
Why Your SaaS Balance is Lying to You: Designing an Immutable Financial Ledger in TypeScript and PostgreSQL