LevelDB is a very fast, persistent, in-process key-value store. Read more about it here: http://code.google.com/p/leveldb/.

This gem contains Ruby bindings so that you can use it from your Ruby process.

INSTALLATION

gem install leveldb-ruby

SYNOPSIS

require 'rubygems' # on for ruby 1.8 require 'leveldb'

make a new database

db = LevelDB::DB.new "/tmp/asdf"

getting and setting

db.put "it", "works" # => "works" db.get "it" # => "works"

db["hello"] = "there" # => "there" db["hello"] # => "there"

db["nonexistent"] # => nil

testing

db.includes? "hello" # => true db.contains? "hello" # => true

keys and values

db.keys # => "it", "hello" db.values # => "there", "works"

iterating

db.each { |k, v| ... } db.map { |k, v| ... } db.each # => LevelDB::Iterator

ranges

db.each(:from => "a", :to => "b") # => LevelDB::Iterator db.each(:from => "a", :to => "b"). map { |k, v| ... }

etc...

deleting

db.delete "hello" # => "there" db.delete "hello" # => nil

LICENSE

Leveldb-ruby is available for your use under the terms of the New BSD License. See the LICENSE file for details.

CREDIT

This gem brought to you by William Morgan http://masanjin.net/ and the following honorable contributors:

• Rick Olson
• byplayer
• Yukio Goto
• Johannes Holzfuß
• Steve Wilhelm
• Gabriel Ebner
  and by users like you.

BUGS

Please report bugs to https://github.com/wmorgan/leveldb-ruby/issues.