Class: Aws::RDS::Types::ConnectionPoolConfiguration
- Inherits:
-
Struct
- Object
- Struct
- Aws::RDS::Types::ConnectionPoolConfiguration
- Defined in:
- gems/aws-sdk-rds/lib/aws-sdk-rds/types.rb
Overview
Specifies the settings that control the size and behavior of the
connection pool associated with a DBProxyTargetGroup
.
Constant Summary collapse
- SENSITIVE =
[]
Instance Attribute Summary collapse
-
#connection_borrow_timeout ⇒ Integer
The number of seconds for a proxy to wait for a connection to become available in the connection pool.
-
#init_query ⇒ String
One or more SQL statements for the proxy to run when opening each new database connection.
-
#max_connections_percent ⇒ Integer
The maximum size of the connection pool for each target in a target group.
-
#max_idle_connections_percent ⇒ Integer
A value that controls how actively the proxy closes idle database connections in the connection pool.
-
#session_pinning_filters ⇒ Array<String>
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.
Instance Attribute Details
#connection_borrow_timeout ⇒ Integer
The number of seconds for a proxy to wait for a connection to become available in the connection pool. This setting only applies when the proxy has opened its maximum number of connections and all connections are busy with client sessions.
Default: 120
Constraints:
- Must be between 0 and 3600.
^
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# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/types.rb', line 1064 class ConnectionPoolConfiguration < Struct.new( :max_connections_percent, :max_idle_connections_percent, :connection_borrow_timeout, :session_pinning_filters, :init_query) SENSITIVE = [] include Aws::Structure end |
#init_query ⇒ String
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
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# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/types.rb', line 1064 class ConnectionPoolConfiguration < Struct.new( :max_connections_percent, :max_idle_connections_percent, :connection_borrow_timeout, :session_pinning_filters, :init_query) SENSITIVE = [] include Aws::Structure end |
#max_connections_percent ⇒ Integer
The maximum size of the connection pool for each target in a target
group. The value is expressed as a percentage of the
max_connections
setting for the RDS DB instance or Aurora DB
cluster used by the target group.
If you specify MaxIdleConnectionsPercent
, then you must also
include a value for this parameter.
Default: 10
for RDS for Microsoft SQL Server, and 100
for all
other engines
Constraints:
- Must be between 1 and 100.
^
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# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/types.rb', line 1064 class ConnectionPoolConfiguration < Struct.new( :max_connections_percent, :max_idle_connections_percent, :connection_borrow_timeout, :session_pinning_filters, :init_query) SENSITIVE = [] include Aws::Structure end |
#max_idle_connections_percent ⇒ Integer
A value that controls how actively the proxy closes idle database
connections in the connection pool. The value is expressed as a
percentage of the max_connections
setting for the RDS DB instance
or Aurora DB cluster used by the target group. With a high value,
the proxy leaves a high percentage of idle database connections
open. A low value causes the proxy to close more idle connections
and return them to the database.
If you specify this parameter, then you must also include a value
for MaxConnectionsPercent
.
Default: The default value is half of the value of
MaxConnectionsPercent
. For example, if MaxConnectionsPercent
is
80, then the default value of MaxIdleConnectionsPercent
is 40. If
the value of MaxConnectionsPercent
isn't specified, then for SQL
Server, MaxIdleConnectionsPercent
is 5
, and for all other
engines, the default is 50
.
Constraints:
- Must be between 0 and the value of
MaxConnectionsPercent
.
^
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# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/types.rb', line 1064 class ConnectionPoolConfiguration < Struct.new( :max_connections_percent, :max_idle_connections_percent, :connection_borrow_timeout, :session_pinning_filters, :init_query) SENSITIVE = [] include Aws::Structure end |
#session_pinning_filters ⇒ Array<String>
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
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# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/types.rb', line 1064 class ConnectionPoolConfiguration < Struct.new( :max_connections_percent, :max_idle_connections_percent, :connection_borrow_timeout, :session_pinning_filters, :init_query) SENSITIVE = [] include Aws::Structure end |