# Package org.eclipse.january.io

- Interface Summary
  Interface | Description
  --- | ---
  IDataAnalysisObject | Used to mark data in the LoaderFactory so that the incorrect values are not stored in the cache.
  ILazyAsyncSaver | Used by lazy writeable datasets to write slices to a file in an asynchronous manner
  ILazyDynamicLoader |
  ILazyLoader | Used by lazy datasets to read slices from a file
  ILazySaver | Used by lazy writeable datasets to write slices to a file
  IMetaLoader | Interface used to mark a loader as being available to load and return metadata without loading the entire file into memory.

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