Sophia v2.2 Release. http://sophia.systems

Changelog:

• Next generation storage architecture
• New storage scheme: row model, typed fields
• Storage optimizations: zero-cost numeric store, pluggable meta-data
• Support for secondary indexes
• O_DIRECT support
• Separate compaction settings per database/index
• Performance and profiling
• Automatic key expire
• Custom comparator, limits
• Lots of refactoring and tests in production

Sophia v2.1 Release. http://sophia.systems

Changelog:

• Serializable Snapshot Isoliation (SSI)
• RAM Storage Mode
• Anti-Cache Storage Mode
• Persistent Caching Storage Mode
• Implemented AMQ Filter
• LRU Mode
• Separate Compression for Hot and Cold data
• Snapshot implementation for Faster Recovery
• Upsert reorganizations and fixes
• New Integration recovery mode
• New Performance metrics

Sophia v1.2.3 Release. (http://sphia.org)

Changelog:

• Multi-part keys support added
• Key duplicates compression (including multi-parts)
• Meta-data compression by default
• Storage formats (kv: default, document: keys are part of value)
• API reworked without variadic arguments
• Asynchronous transactions reworked, added sp_poll()
• Added read-less update operation: sp_update()
• Added sp_batch() (atomic batch writes, to be used with large transactions)
• Cursor implementation made state-less
• Bring iteration order to sp_get(db) semantic, same as for cursors
• Mmap mode on/off
• Internal engine refactoring
• Test system upgrade, profiling (test system generates 230 000 tests in full set now)