Archive - TienNg21's Newsletter

Using git commit fixup to simplify commit squashing

Stop manually squashing commits — use --fixup with autosquash to clean up your history automatically

Mar 21, 2025 • TienNg21

February 2025

Reconciliation as Eventual Consistency

Why your ledger and the bank inevitably drift, why that's expected, and how to build an engine that detects, classifies, and converges the difference

Feb 22, 2025 • TienNg21

VietQR Generating Banking QR Code

If you've been to Vietnam recently, you've seen them everywhere: black-and-white QR codes taped to every coffee stand, parking booth, and street-food…

Feb 14, 2025 • TienNg21

January 2025

Understanding Git DAG

A mental model that turns Git from a set of memorized commands into a predictable, powerful tool you can reason about

Jan 25, 2025 • TienNg21

Virtual Accounts in Fintech

How unique account numbers eliminate payment attribution, simplify reconciliation, and make money movement reliable at scale

Jan 9, 2025 • TienNg21

November 2024

Start sharing my journey

Learn & Build & Share & Learn & Build & Share

Nov 1, 2024

#nojs-banner { position: fixed; bottom: 0; left: 0; padding: 16px 16px 16px 32px; width: 100%; box-sizing: border-box; background: red; color: white; font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"; font-size: 13px; line-height: 13px; } #nojs-banner a { color: inherit; text-decoration: underline; } This site requires JavaScript to run correctly. Please turn on JavaScript or unblock scripts