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Composition of MySQL server process mysqld
2022-07-22 12:09:00 【Green wood and wind】
Connected layer 、SQL layer 、 Storage layer composition .
adjoining course ： Maintain a thread for each connection , Authentication 、 Processing query execution .
SQL layer ： Including parsing 、 Authorization analysis 、 Optimize 、 perform 、 Query logging .
Storage layer ： Manage table data , Common storage engines are InnoDB、MyISAM、MEMORY and NDBCLUSTER.InnoDB and NDBCLUSTER Is the only two transactional that support foreign keys MySQL Storage engine
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