Database Reference
In-Depth Information
Thus to avoid situations, we need highly available queues; they are called mirrored
queues, which are replicated on all the nodes in the cluster. Mirrored queues have one
master and multiple slaves, the oldest one is the master and if it's not available, the oldest
amongst the available nodes becomes the master. Messages are published to all slaves.
This enhances the availability but doesn't distribute the load. To create the mirror queues,
use the following steps:
1. Mirroring can be enabled by adding a policy using the web UI. Go to the
Admin
tab and select
Policies
and click on
Add policy
.
2. Specify policy
Name
,
Pattern
,
Definition
, and click on
Add Policy
, as shown in
the following screenshot:
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