How I built a billing system with a real double-entry ledger in Node + PostgreSQ

<p>A few months ago I sat down to add "loyalty points" to Glazed, my waffle kiosk brand. Simple, right? Add a <code>points</code> column to the users table, increment it on

<p>The bug I kept designing around was not "wrong penalty amount."</p> <p>Wrong amounts are visible. A supplier sees a credit note for EUR 8400, checks the contract, and pushes

<h1> Architecting Multi-Tenant Billing Engines: A Database Schema Guide </h1> <p>When building a Software-as-a-Service (SaaS) application, developers often spend most of their

<blockquote> <p>Cross-post. Original: <strong><a href="https://www.stellarbytecapital.com/blog/cross-border-payment-system-design/" rel="noopener