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DaanHoogland merged 1 commit into from
Sep 5, 2024
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tuning: note on db connection pool #431

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19 changes: 19 additions & 0 deletions source/adminguide/tuning.rst
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Expand Up @@ -91,6 +91,25 @@ at `MySQL Reference
Manual <http://dev.mysql.com/doc/refman/5.5/en/innodb-buffer-pool.html>`_.


Selecting Database Connection Pool Library
------------------------------------------

CloudStack uses JDBC connection pool to manage and use database connections
in an optimal manner. It allows using either
`HikariCP <https://github.com/brettwooldridge/HikariCP>`_ or
`DBCP 2 <https://commons.apache.org/dbcp/>`_ based on the preference for
individual CloudStack databases - cloud, cloud_usage, simulator.

The following settings can be configured in the db.properties configuration
file for the management server or usage server:
db.cloud.connectionPoolLib
db.cloud_usage.connectionPoolLib
db.simulator.connectionPoolLib

To use DBCP 2, the value for the configuration must be set to 'dbcp'. An
empty value or 'hikaricp' will allow using HikariCP.


Monitor the Database Load
-------------------------

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