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A two-million-line database vibe-coded for $600

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A write-up on what $600 of Claude bought in database code, and what it didn't.

Credits

  • HN submitter Fendy Source ↗

Earliest dated source: 26 Feb 2026

The full story

A Zilliz engineer spent $600 on Claude Code working on a 2-million-line C++ database codebase, rather than, as the title jokes, on Dior for his wife. His lesson: write tests, not code reviews. A test-first workflow with six parallel Claude Code sessions turned the huge codebase into a daily shipping pipeline. The post is frank about what that money did and didn't buy.

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Sources

From the maker's own write-up or code. We summarise what they report; we haven't tested it ourselves.

  • Hacker News: Spending $600 on Claude to Vibe-Code a 2M-Line DatabaseBlog or write-upzilliz.com

    The full write-up of the workflow.

  • Hacker News discussion (3 points)Forum threadnews.ycombinator.com
    HN submitter: FendyPosted 26 Feb 2026

    Hacker News link.

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