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This article analyzes a MySQL 5.7 OOM incident triggered by a heavy full‑text query, examines memory usage patterns with Tcmalloc, demonstrates how switching to Jemalloc releases memory, and provides step‑by‑step commands and observations to prevent similar outages.
This article explains how to monitor MySQL full-text indexes by describing relevant InnoDB parameters, the metadata tables that expose index activity, and step‑by‑step examples that create a sample table, configure monitoring, observe cache behavior, and manage index maintenance operations.
This article explains MySQL full‑text indexing, compares its syntax with ordinary SQL, demonstrates how to create and query a full‑text index using natural language, boolean, and query‑expansion modes, and shows performance differences through execution‑plan analysis and relevance ranking.
This article explains MySQL full-text (inverted) indexes, their underlying auxiliary tables, buffer pool configuration, document ID handling, and the special transaction semantics required for inserting and querying indexed data, providing practical SQL examples and performance considerations.