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Reading up on BigDecimal

2 deep · digging since jun 29

  • news.ycombinator.com favicon
    Fintech Engineering Handbook

    Hacker News commenters debate whether monetary values must always be stored as integers, with quants arguing floats suffice for risk modeling but transfers require exact integer precision.

  • w.pitula.me favicon
    Fintech Engineering Handbook

    The handbook catalogs patterns for representing, recording, and executing money movements—precision handling, double-entry ledgers, immutability, and invariants—to prevent data loss or invention in fintech systems.