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Set Configuration

The following are the example set configurations.

Declarative:

<set name="default">
   <backup-count>1</backup-count>
   <async-backup-count>0</async-backup-count>
   <max-size>10</max-size>
   <item-listeners>
      <item-listener>
          com.hazelcast.examples.ItemListener
      </item-listener>
   <item-listeners>
</set>

Programmatic:

Config config = new Config();
CollectionConfig collectionSet = config.getCollectionConfig();
collectionSet.setName( "MySet" ).setBackupCount( "1" )
        .setMaxSize( "10" );

Set configuration has the following elements.

  • backup-count: Count of synchronous backups. Set is a non-partitioned data structure, so all entries of a Set reside in one partition. When this parameter is '1', it means there will be 1 backup of that Set in another node in the cluster. When it is '2', 2 nodes will have the backup.
  • async-backup-count: Count of asynchronous backups.
  • max-size: The maximum number of entries for this Set.
  • item-listeners: Lets you add listeners (listener classes) for the list items. You can also set the attributes include-value to true if you want the item event to contain the item values, and you can set local to true if you want to listen to the items on the local node.