This Go library implements a NoSQL database with kv, list, hash, zset,
 bitmap, and set. This library uses goleveldb as a backend to store data.
 It is a pure Go implementation of ledisdb and shrink.
 .
 Features:
   - Rich data structure: KV, List, Hash, ZSet, Bitmap, Set
   - Store large amounts of data in memory
   - Support expiration and TTL
   - Easy to use interface