# Package org.apache.ignite.internal.processors.cache.persistence.tree.io

Interface Summary
AbstractDataPageIO.CC<T>: Defines closure interface for applying computations to data page items.

Class Summary
AbstractDataPageIO<T extends Storable>: Data pages IO.
BPlusInnerIO<L>: Abstract IO routines for B+Tree inner pages.
BPlusIO<L>: Abstract IO routines for B+Tree pages.
BPlusLeafIO<L>: Abstract IO routines for B+Tree leaf pages.
BPlusMetaIO: IO routines for B+Tree meta pages.
CacheVersionIO: Utility to read and write `GridCacheVersion` instances.
DataPageIO: Data pages IO.
DataPagePayload
IOVersions<V extends PageIO>: Registry for IO versions.
PageIO: Base format for all the page types.
PageMetaIO
PagePartitionCountersIO: Page IO for Partition Counters, IO for pages containing cache ID mapping to its size.
PagePartitionMetaIO: IO for partition metadata pages.
SimpleDataPageIO: Data pages IO for Metastorage.
TrackingPageIO: We use dedicated page for tracking pages updates.

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Ignite Fabric | : ver. 2.4.0
Release Date | : March 5 2018