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The Lord of the Queries: Defeating the N+1 Dragon

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The Quest Begins (The "Why") Honestly, I was just trying to ship a feature that showed a user’s recent activity feed. The UI looked slick, the backend was a simple Rails API, and I felt like I’d nailed it. Then I opened the logs and saw hundreds of SQL statements scrolling by for a single page load. My heart sank – it was like watching the Death Star trench run and realizing every TIE fighter was a separate query. That moment was my “aha!” – the classic N+1 query problem rearing its ugly head.

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