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======================================================================= KahaDB : An Embedded Lightweight Non-Relational Database ======================================================================= Goals: * Provide a simple collections based interface for storing persistent data. * Provide a lower level key value interface for storing data. Secondary keys should be supported. * Fast recovery Status: * Moved the org.apache.activemq.kaha package into this module and renamed it as org.apache.kahadb * Moved a refactored version of the low level indexing logic used by Apache xindice to the org.apache.kahadb.xindice page. TODO: * None of our current index support fast recovery. They suffer from partial page write failures so on a crash, they have to be fully rebuilt from the data logs. * Indexes should know what the last transaction id that updated it, so that missing operations can be replayed. * Investigate implementing data log replication for HA.