| /* |
| * 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.Ignite; |
| import org.apache.ignite.Ignition; |
| import org.apache.ignite.cluster.ClusterState; |
| import org.apache.ignite.configuration.DataStorageConfiguration; |
| import org.apache.ignite.configuration.DiskPageCompression; |
| import org.apache.ignite.configuration.IgniteConfiguration; |
| import org.junit.jupiter.api.Test; |
| |
| public class IgnitePersistence { |
| |
| @Test |
| void disablingWal() { |
| |
| //tag::wal[] |
| IgniteConfiguration cfg = new IgniteConfiguration(); |
| DataStorageConfiguration storageCfg = new DataStorageConfiguration(); |
| storageCfg.getDefaultDataRegionConfiguration().setPersistenceEnabled(true); |
| |
| cfg.setDataStorageConfiguration(storageCfg); |
| |
| Ignite ignite = Ignition.start(cfg); |
| |
| ignite.cluster().state(ClusterState.ACTIVE); |
| |
| String cacheName = "myCache"; |
| |
| ignite.getOrCreateCache(cacheName); |
| |
| ignite.cluster().disableWal(cacheName); |
| |
| //load data |
| ignite.cluster().enableWal(cacheName); |
| |
| //end::wal[] |
| ignite.close(); |
| } |
| |
| @Test |
| public static void changeWalSegmentSize() { |
| // tag::segment-size[] |
| IgniteConfiguration cfg = new IgniteConfiguration(); |
| DataStorageConfiguration storageCfg = new DataStorageConfiguration(); |
| storageCfg.getDefaultDataRegionConfiguration().setPersistenceEnabled(true); |
| |
| storageCfg.setWalSegmentSize(128 * 1024 * 1024); |
| |
| cfg.setDataStorageConfiguration(storageCfg); |
| |
| Ignite ignite = Ignition.start(cfg); |
| // end::segment-size[] |
| |
| ignite.close(); |
| } |
| |
| @Test |
| public static void cfgExample() { |
| //tag::cfg[] |
| IgniteConfiguration cfg = new IgniteConfiguration(); |
| |
| //data storage configuration |
| DataStorageConfiguration storageCfg = new DataStorageConfiguration(); |
| |
| storageCfg.getDefaultDataRegionConfiguration().setPersistenceEnabled(true); |
| |
| //tag::storage-path[] |
| storageCfg.setStoragePath("/opt/storage"); |
| //end::storage-path[] |
| |
| cfg.setDataStorageConfiguration(storageCfg); |
| |
| Ignite ignite = Ignition.start(cfg); |
| //end::cfg[] |
| ignite.close(); |
| } |
| |
| @Test |
| void walRecordsCompression() { |
| //tag::wal-records-compression[] |
| IgniteConfiguration cfg = new IgniteConfiguration(); |
| |
| DataStorageConfiguration dsCfg = new DataStorageConfiguration(); |
| dsCfg.getDefaultDataRegionConfiguration().setPersistenceEnabled(true); |
| |
| //WAL page compression parameters |
| dsCfg.setWalPageCompression(DiskPageCompression.LZ4); |
| dsCfg.setWalPageCompressionLevel(8); |
| |
| cfg.setDataStorageConfiguration(dsCfg); |
| Ignite ignite = Ignition.start(cfg); |
| //end::wal-records-compression[] |
| |
| ignite.close(); |
| } |
| |
| } |