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Sep 22, 2025 · Databases

Why MySQL Tables Shouldn’t Exceed 10 Million Rows – A Deep Dive into InnoDB Pages & B+Tree Limits

This article explains why the industry advises keeping MySQL single‑table row counts below ten million by examining InnoDB’s 16KB page structure, B+‑tree indexing mechanics, fan‑out calculations, and how page size and row size together determine the practical limits and performance cliffs of large tables.