Glossary:Connection pooling

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Connection Pooling, connection pooling
A cache of database connections that are maintained so that the connections can be reused when future requests to the database are required. Connection pools are designed to improve performance by minimizing the opening, closing, or maintaining of a separate database connection for each requestor. When you use connection pooling, a database connection is returned to a pool when it is no longer needed by a requestor and made available for future requests.