Articles – Page 11

Software Architecture

A Real-World Architectural Trade-Off Between a Monolith, Modularity, and Selective Decomposition

One of the most interesting architecture decisions I worked through was not about choosing between two technologies. It was about deciding how much architecture we actually needed. We had a large Java/Spring application that had been running for several years.…

Financial Infrastructure

Anatomy of the 4-Party Model – The Foundation of Card Payment

A coffee shop in Tokyo accepts a Visa card issued by a small credit union in Ohio. The barista has never heard of the credit union. The credit union has never heard of the coffee shop. There is no direct…

Financial Infrastructure

The Phantom Vault – How Your Balance is Just a Database Row

You walk into a bank branch, hand a teller a crisp $100 bill, and deposit it into your checking account. The teller stamps a receipt, you open your mobile app a minute later, and sure enough, your balance has gone…