A client's product search showed deleted items, missed new ones, and displayed yesterday's prices. The Elasticsearch index had been quietly diverging from PostgreSQL for months.
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Hello, I'm Luke
Applied AI architecture, agent harnesses, and notes from getting AI systems into production.
Latest Posts
- The app started with three roles. When I audited it, there were 94 permissions, 17 roles, and a function called checkAccess that was 400 lines of nested conditionals.
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- A client showed me their "tech debt backlog" with 214 items. Missing tests, outdated dependencies, bad naming, a database nobody understood, and an actual architectural shortcut from 2019. Lumping all of that into one bucket is why none of it gets fixed.
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- After parachuting into dozens of client projects, I've developed a mental checklist for the first sixty minutes. Most of what matters isn't in the code itself.
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- A customer clicked "Export to CSV" on 380,000 records. The server loaded them all into memory, OOMed, and took the API offline for every tenant. The fix was straightforward. The real question is why nobody caught it sooner.
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