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Table_Definition_Cache


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Table_Definition_Cache. 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. If you have a large number of tables (> 400) in your database instance, you should consider a larger table definition cache to increase your.

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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. The table_definition_cache system variable defines the number of table definitions that can be stored in the table definition cache.

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Drizzle MicroKernel. ppt download

You can check how to calculate your table_open_cache. 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. If not, it checks the table_definition_cache in the server layer. Now, when a table is read, the innodb engine checks the data dictionary if the table definition is present or not.

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