class Aws::RDS::Types::ConnectionPoolConfiguration

Specifies the settings that control the size and behavior of the connection pool associated with a `DBProxyTargetGroup`.

@note When making an API call, you may pass ConnectionPoolConfiguration

data as a hash:

    {
      max_connections_percent: 1,
      max_idle_connections_percent: 1,
      connection_borrow_timeout: 1,
      session_pinning_filters: ["String"],
      init_query: "String",
    }

@!attribute [rw] max_connections_percent

The maximum size of the connection pool for each target in a target
group. For Aurora MySQL, it is expressed as a percentage of the
`max_connections` setting for the RDS DB instance or Aurora DB
cluster used by the target group.

Default: 100

Constraints: between 1 and 100
@return [Integer]

@!attribute [rw] max_idle_connections_percent

Controls how actively the proxy closes idle database connections in
the connection pool. A high value enables the proxy to leave a high
percentage of idle connections open. A low value causes the proxy to
close idle client connections and return the underlying database
connections to the connection pool. For Aurora MySQL, it is
expressed as a percentage of the `max_connections` setting for the
RDS DB instance or Aurora DB cluster used by the target group.

Default: 50

Constraints: between 0 and `MaxConnectionsPercent`
@return [Integer]

@!attribute [rw] connection_borrow_timeout

The number of seconds for a proxy to wait for a connection to become
available in the connection pool. Only applies when the proxy has
opened its maximum number of connections and all connections are
busy with client sessions.

Default: 120

Constraints: between 1 and 3600, or 0 representing unlimited
@return [Integer]

@!attribute [rw] session_pinning_filters

Each item in the list represents a class of SQL operations that
normally cause all later statements in a session using a proxy to be
pinned to the same underlying database connection. Including an item
in the list exempts that class of SQL operations from the pinning
behavior.

Default: no session pinning filters
@return [Array<String>]

@!attribute [rw] init_query

One or more SQL statements for the proxy to run when opening each
new database connection. Typically used with `SET` statements to
make sure that each connection has identical settings such as time
zone and character set. For multiple statements, use semicolons as
the separator. You can also include multiple variables in a single
`SET` statement, such as `SET x=1, y=2`.

Default: no initialization query
@return [String]

@see docs.aws.amazon.com/goto/WebAPI/rds-2014-10-31/ConnectionPoolConfiguration AWS API Documentation

Constants

SENSITIVE