// field notes

Shorts Notes

Every Short, written out with the extra detail forty-eight seconds never had room for. One idea, unpacked slowly.

01 system design · August 21, 2026 Why Your Checkout Freezes When the Boss Runs a Report (and How CQRS Fixes It) A plain-English walkthrough of the CQRS pattern: why one database serving both orders and reports causes checkout to hang, and how splitting reads from writes fixes it.