20.5.3. Configuring Parameters

You can configure HornetQ large messages by setting various parameters:
Using HornetQ Core API on Client Side
If you are using HornetQ Core API on client side you need to set ServerLocator.setMinLargeMessageSize parameter to specify minimum size of large messages. The minimum size of large messages(min-large-message-size) is set to 100KiB by default. 
ServerLocator locator = HornetQClient.createServerLocatorWithoutHA(new TransportConfiguration(NettyConnectorFactory.class.getName()))

locator.setMinLargeMessageSize(25 * 1024);

ClientSessionFactory factory = HornetQClient.createClientSessionFactory();
Configuring server for Java Messaging Service (JMS) clients
If you using Java Messaging Service (JMS) you need to specify the minimum size of large messages in the attribute min-large-message-size of your server configuration files (standalone.xml and domain.xml). The minimum size of large messages(min-large-message-size) is set to 100KiB by default.

Note

The value of the attribute min-large-message-size should be in bytes
You may choose to compress large messages for fast and efficient transfer. All compression/de-compression operations are handled on client side. If the compressed message is smaller than min-large-message-size,it is sent to the server as a regular message. Using Java Messaging Service (JMS) you can compress large messages by setting the boolean property compress-large-messages "true" on the server locator or ConnectionFactory. 
<connection-factory name="ConnectionFactory">
   <connectors>
      <connector-ref connector-name="netty"/>
   </connectors>
...
   <min-large-message-size>204800</min-large-message-size>
   <compress-large-messages>true</compress-large-messages>
</connection-factory>
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