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Database Connection Pooling

Connection pooling enables the use of preconfigured connection pools on the Amazon Redshift, PostgreSQL, and Snowflake database dialects.

This option lets Looker use pools of connections through the JDBC driver. Database connection pooling enables faster query performance; a new query does not need to create a new database connection but can instead use an existing connection from the connection pool. The connection pooling capability ensures that a connection is cleaned up after a query execution and is available for reuse after the query execution ends.

To enable connection pooling, turn on the Database Connection Pooling Labs feature. When the Labs feature is on, if you have configured connection pools on your database and are using one of the dialects listed above, Looker will use connection pooling.

Some things to consider when using connection pools:

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