Configuration Examples
This section presents possible disk usage configurations for BigMemory Go.
Options for Crash Resilience
The following configuration provides fast restartability with fully consistent data persistence:
The following configuration provides fast restartability with eventually consistent data persistence:
Temporary Disk Storage
The "localTempSwap" persistence strategy create a local disk tier for in-memory data during BigMemory operation. The disk storage is temporary and is cleared after a restart.
Note: | With the "localTempSwap" strategy, you can use maxEntriesLocalDisk or maxBytesLocalDisk at either the Cache or CacheManager level to control the size of the disk tier. |
In-memory Only Cache
When the persistence strategy is "none", all cache stays in memory (with no overflow to disk nor persistence on disk).
Programmatic Configuration Example
The following is an example of how to programmatically configure cache persistence on disk:
Configuration cacheManagerConfig = new Configuration()
.diskStore(new DiskStoreConfiguration()
.path("/path/to/store/data"));
CacheConfiguration cacheConfig = new CacheConfiguration()
.name("my-cache")
.maxBytesLocalHeap(16, MemoryUnit.MEGABYTES)
.maxBytesLocalOffHeap(256, MemoryUnit.MEGABYTES)
.persistence(new PersistenceConfiguration().strategy(Strategy.LOCALRESTARTABLE));
cacheManagerConfig.addCache(cacheConfig);
CacheManager cacheManager = new CacheManager(cacheManagerConfig);
Ehcache myCache = cacheManager.getEhcache("my-cache");
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