RocksDB 3.1

New features in RocksDB 3.1:

• Materialize hash index
• FIFO Compaction

Change LOG: https://github.com/facebook/rocksdb/blob/3.1.fb/HISTORY.md
All the commits: 3.0.fb...3.1.fb

RocksDB 3.0

New features in RocksDB 3.0:

• Column Family support (https://github.com/facebook/rocksdb/wiki/Column-Families)
• Ability to use different checksum function in block based table. You can choose between crc32 and xxHash.
• ReadOptions::prefix_seek and ReadOptions::prefix are deprecated
• Full change log: https://github.com/facebook/rocksdb/blob/3.0.fb/HISTORY.md
  .

RocksDB 2.8

RocksDB 2.8 release is mostly focused on improving performance for in-memory use cases