docs/_docs/code-snippets/java/src/main/java/org/apache/ignite/snippets/Swap.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.ignite.snippets;

import org.apache.ignite.configuration.DataRegionConfiguration;
import org.apache.ignite.configuration.DataStorageConfiguration;
import org.apache.ignite.configuration.IgniteConfiguration;

public class Swap {

    public void configureSwap() {
        //tag::swap[]
        // Node configuration.
        IgniteConfiguration cfg = new IgniteConfiguration();

        // Durable Memory configuration.
        DataStorageConfiguration storageCfg = new DataStorageConfiguration();

        // Creating a new data region.
        DataRegionConfiguration regionCfg = new DataRegionConfiguration();

        // Region name.
        regionCfg.setName("500MB_Region");

        // Setting initial RAM size.
        regionCfg.setInitialSize(100L * 1024 * 1024);

        // Setting region max size equal to physical RAM size(5 GB)
        regionCfg.setMaxSize(5L * 1024 * 1024 * 1024);
                
        // Enable swap space.
        regionCfg.setSwapPath("/path/to/some/directory");
                
        // Setting the data region configuration.
        storageCfg.setDataRegionConfigurations(regionCfg);
                
        // Applying the new configuration.
        cfg.setDataStorageConfiguration(storageCfg);
        //end::swap[]
    }
}