2. 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)
3. 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)
4. MicroKernel (architecture)
Key points
Basic content tree model
MVCC-based revisions
Merging of concurrent changes
Any implementation a “MicroKernel”,
regardless of the specific interface
