Martin Fowler • 7/31/2025

Partner with the AI, throw away the code

This article details a developer's experience using AI (Claude Sonnet 4 via Cursor) to tackle a difficult performance problem: a slow API endpoint with complex SQL queries and business rules. It describes the process of using AI to reverse-engineer the code, understand business logic, create benchmarks, and ultimately refactor from a Transaction Script to a Domain Model pattern for a Go and MySQL application.

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#software development #generative ai #sql optimization