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MicroKernel & NodeStoretwo sides of the same coin
MicroKernel (interface) Designed with remoting and potential
non-Java implementations in mind RPC-like, with JSON/P serialization Two main implementations:
MongoMK (the new MongoDB-based MK) “H2” MK (old one, to be deprecated)
NodeStore Mapping of MK concepts to an object-
oriented, native Java set of interfaces Omissions: direct journal access, filter rules Extensions: NodeBuilder, NodeStateDiff
No serialization, random access possible Three main implementations
MemoryNodeStore (for testing, utilities) KernelNodeStore (MK mapping) SegmentNodeStore (the Segment/TarMK)
MicroKernel (architecture) Key points
Basic content tree model MVCC-based revisions Merging of concurrent changes
Any implementation a “MicroKernel”, regardless of the specific interface
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