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List Configuration

The following are example list configurations.

Declarative:

<list 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>
</list>

Programmatic:

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

List configuration has the following elements.

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