Question

我正在尝试为Apache Ignite配置持久性存储，以使我的IgniteCache实例在应用程序重启时不会丢失数据。我的设置是一个从我的代码开始的本地单节点群集，如下所示：

IgniteConfiguration cfg = new IgniteConfiguration();
cfg.setWorkDirectory("C:\\ignite");

// Ignite persistence configuration.
DataStorageConfiguration storageCfg = new DataStorageConfiguration();
storageCfg.setStoragePath("ignitedb/storage");
storageCfg.setWalPath("ignitedb/wal");
storageCfg.setWalArchivePath("ignitedb/wal/archive");

// Enabling the persistence.

storageCfg.getDefaultDataRegionConfiguration().setPersistenceEnabled(true);

// Applying settings.
cfg.setDataStorageConfiguration(storageCfg);

Ignite ignite = Ignition.getOrStart(cfg);
ignite.active(true);
// Get all server nodes that are already up and running.
Collection<ClusterNode> nodes = ignite.cluster().forServers().nodes();
// Set the baseline topology that is represented by these nodes.
ignite.cluster().setBaselineTopology(nodes);
return ignite;

这样创建缓存：

cacheConfiguration = new CacheConfiguration<>();
cacheConfiguration.setBackups(1);
cacheConfiguration.setAtomicityMode(CacheAtomicityMode.ATOMIC);
cacheConfiguration.setName("UserCache");
cacheConfiguration.setCacheMode(CacheMode.LOCAL);
cacheConfiguration.setReadFromBackup(true);
cacheConfiguration.setWriteSynchronizationMode(CacheWriteSynchronizationMode.FULL_SYNC);
cacheConfiguration.setIndexedTypes(String.class, User.class);
IgniteCache<String, User> cache = ignite.getOrCreateCache(cacheConfiguration);

在缓存中存储User对象。 Ignite在C:\ignite下创建目录结构。但是在应用重启时，所有数据都会丢失。如何正确配置呢？

Answer 1

似乎根本原因是LOCAL缓存模式。尝试使用REPLICATED或PARTITIONED：https://apacheignite.readme.io/docs/cache-modes

如何为Apache Ignite缓存配置持久性存储？

1 个答案: