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Table_Definition_Cache


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Table_Definition_Cache. Increasing this value increases the. A high value of table_definition_cache can improve performance by reducing the time required to open tables, while a low value can result in increased overhead of reading the table definition from disk.

Schematic diagram of cache table split. Download Scientific Diagram
Schematic diagram of cache table split. Download Scientific Diagram from www.researchgate.net

If you use a large. Increasing this value increases the. When a client establishes a connection to a mysql server, the server maintains a cache of table definitions in memory so that it can quickly look up metadata about tables that are used in queries.

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Schematic diagram of cache table split. Download Scientific Diagram

Increasing this value increases the. Now, when a table is read, the innodb engine checks the data dictionary if the table definition is present or not. Increasing this value increases the. You should consider increasing this parameter if you have large number of tables (>400) in your db instance.

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