cdb-ruby
Lightweight, pure-ruby reader/writer for DJ Bernstein's cdb format.
Cdbs are fast, immutable, on-disk hashtables. They're great for storing modest (up to 4GB) amounts of arbitrary key-value pairs. They allow random lookup, but no enumeration or traversal.
file = File.new('table.cdb')
Cdb.writer(file) do |cdb|
cdb['key1'] = 'value1'
cdb['key2'] = 'value2'
# ...
end
reader = Cdb.reader(file)
reader['key1']
# => "value1"