The MOSS, memory-oriented sorted segments, library provides a key/value
 storage system implemented entirely within Go that is very fast and
 light weight. It comes with optional persistence.
 .
 Features:
   * ordered key-val collection API
   * 100% go implementation
   * key range iterators
   * snapshots provide for isolated reads
   * atomic mutations via a batch API
   * event callbacks allow the monitoring of asynchronous tasks
   * unit tests
   * and so on...