JSON based document oriented DBMS

• Project status: Pre-Alpha
• Current release was tested only Mac OS X.

• JSON Document manipulation.
• Global: get, getOrCreate, set, getSet, setIfNotExists
• Array: push, pop, shift, unshift, splice, cut, slice, count, randGet, randPop
• List: push, unshift, pushUniq, unshiftUniq
• Object: set, setIfNotExists, del, keys
• Number: incr, decr
• String: append, prepend, length, sub
• High performance
• Sharded Memory cache.
• Document level exclusive-lock.
• libev async IO.
• leveldb (google) based storage engine.
• Background lazy writer.
• Scale-out for high scalability
• Multi slave real-time streaming replication (each touch, per virtual bucket)
• Multi slave Lazy streaming replication (each checkout, per virtual bucket)
• Streaming dump (per virtual bucket)
• Managed live sharding (max 100 cluster)
• Async protocol

• leveldb
• https://code.google.com/p/leveldb/
• jansson
• http://www.digip.org/jansson/
• libev
• http://software.schmorp.de/pkg/libev.html

• Feature: Auto sharding.
• Cache out entries of current virtual bucket.
• Implement "new shard" build sequence.
• Implement dump pipe.
• Parse configurations.
• Implement bgwriter.
• Implement logger.
• Implement client lib.
• Implement configuration server.