Housekeeping
This is the manual for older MicroStream versions (Version < 5.0).
The new documentation (Version >= 5.0) is located at:
Available properties are:
- House keeping interval interval the housekeeping is triggered in milliseconds, default once per every second
EmbeddedStorageManager storage = EmbeddedStorage.Foundation(
Storage.ConfigurationBuilder()
.setHousekeepingController(Storage.HousekeepingController(1000, 10_000_000))
.createConfiguration())
.start();
The desired file min and max sizes and payload ratio is configured by the
StorageDataFileEvaluator:available properties are:
- Data file minimum size Files smaller then minimum file size will be merged with other files if possible, default is 1 MB.
- Data file maximum size Files larger then maximum file size will be split in smaller ones, default is 8 MB.
- Data file minimum use ratio Ratio of non-gap data contained in a storage file to prevent the file from being dissolved, default is 0.75 (75%).
EmbeddedStorageManager storage = EmbeddedStorage.Foundation(
Storage.ConfigurationBuilder()
.setDataFileEvaluator(Storage.DataFileEvaluator(1024*1024, 1024*1024*8, 0.75))
.createConfiguration())
.start();
The lifetime of objects in the internal entity cache can be configured by the
StorageEntityCacheEvaluator:Available properties are:
- Entity cache thresholdAbstract threshold value, roughly comparable to size in bytes with a time component, at which a cache must be cleared of some entities. Default is
1000000000. - Entity cache timeout Time in milliseconds after that an entity is considered to be old if not read meanwhile. must be greater zero, default is
86400000ms(1 day).
EmbeddedStorageManager storage = EmbeddedStorage.Foundation(
Storage.ConfigurationBuilder()
.setEntityCacheEvaluator(Storage.EntityCacheEvaluator(
86_400_000,
1_000_000_000))
.createConfiguration())
.start();
Last modified 2yr ago