Changing message reliability for a bus destination

Messages have a quality of service attribute that specifies the reliability of message delivery. You can select a reliability to suit your requirements for assured delivery, and system performance.

The administrator can specify the reliability setting on bus destinations, or the reliability can be specified by individual producers (typically under application control through an API call). The administrator can specify whether the default reliability for the destination can be overridden by a producer, and the maximum reliability that attached producers can request.

To browse or change the message reliability setting of a destination, use the administrative console to complete the following steps:

Procedure

1. Click Service integration > Buses in the navigation pane.

2. Click the name of the bus on which the destination exists in the content pane.

3. Click Destinations

4. Click the destination name. This displays the details page for the destination.
5. Review the reliability properties. The following properties control the message reliability for the destination:

   Default reliability

   The reliability assigned to a message produced to this destination when an explicit reliability has not been set by the producer.

   Maximum reliability

   The maximum reliability of messages accepted by this destination.

   These properties can have values from the following list:

   Best effort nonpersistent

   Messages are discarded when a messaging engine stops or fails. Messages may also be discarded if a connection used to send them becomes unavailable and as a result of constrained system resources.

   Express nonpersistent

   Messages are discarded when a messaging engine stops or fails. Messages may also be discarded if a connection used to send them becomes unavailable.

   Reliable nonpersistent

   Messages are discarded when a messaging engine stops or fails.

   Reliable persistent

   Messages may be discarded when a messaging engine fails.

   Assured persistent

   Messages are not discarded.

   For more information about using these properties to control message reliability, see Message reliability levels.

6. Review whether producers can override the default reliability setting.

   Enable producers to override default reliability

   Select this option to enable producers to override the default reliability that is set on the destination.

7. Optional: Change the destination properties to suit your needs.

   You can further refine the configuration of a destination by setting other properties to suit your needs, as described in Configure bus destinations.

8. Click OK.
9. Save your changes to the master configuration.