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LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.

LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.

  • Keys and values are arbitrary byte arrays.
  • Data is stored sorted by key.
  • Callers can provide a custom comparison function to override the sort order.
  • The basic operations are Put(key,value)Get(key)Delete(key).
  • Multiple changes can be made in one atomic batch.
  • Users can create a transient snapshot to get a consistent view of data.
  • Forward and backward iteration is supported over the data.
  • Data is automatically compressed using the Snappy compression library.
  • External activity (file system operations etc.) is relayed through a virtual interface so users can customize the operating system interactions.

Documentation

LevelDB library documentation is online and bundled with the source code.
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