#Order_id

Small social media resellers in the Philippines often run everything from Messenger and a...

Last week I found 11 orders in my database that had been "pending" for days. The customers had paid....

Photo by Chris Ried on Unsplash (Unsplash License). A query that runs is not a query that's right....

The idempotency check looked airtight: query for the key, create the order if nothing comes back. Nobody had checked whether that query was reading the same data it was about to write. For 22 minutes during a cell network blip, it wasn

When a customer pays in crypto, the merchant shows an amount in a coin that is priced against a fiat...

Two systems, one record, and a question nobody asked at kickoff: for each field, which side is...

In this 3-part article series, I will walk you through the process of making a web app for something...

Learn database normalization from 1NF to 5NF with practical examples, denormalization trade-offs, and real-world schema design.

Most enterprise agent demos cheat at the exact point where things get interesting. They show a nice...

Design event-driven systems with practical patterns — event sourcing, CQRS, sagas, and choosing the right message broker.

AI code review is different from reviewing a colleague's PR. Here's the five-signal structural check that takes 30 seconds and catches the failures that matter.