N Plus One Problem

Noun Phrase · Slang & Abbreviations

Definitions

  1. A performance issue where one initial query triggers many additional dependent queries, often one per item, causing avoidable load and latency. In engineering slang, the N plus one problem is one of the classic ways innocent code becomes slow at scale.

    In plain English: A performance problem where code does one base query plus many extra queries unnecessarily.

    Example: "The endpoint looked fine in local tests until the N plus one problem showed up in production data and multiplied one request into hundreds of database calls."

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