gistfile1.txt

require 'digest/md5'
require 'fileutils'
require 'leveldb'
# no_of_keys = 20_000_000
no_of_keys = 20_000_000

# 1.upto(no_of_keys) do |i|
#   digest = Digest::MD5.hexdigest(i.to_s)
#   head = digest[0..1]
#   key  = digest[2..-1]
#   FileUtils.mkdir_p(head)
#   File.open("#{head}/index.txt", 'a+') do |f|
#   # use "\n" for two lines of text
#     f.puts "#{digest}:#{i}"
#   end
# end

# db = DBM.open('test', 766, DBM::WRCREAT)
db = LevelDB::DB.new('test')
# 1.upto(no_of_keys) do |i|
#   digest = Digest::MD5.hexdigest(i.to_s)
#   puts i
#   db[digest] = i.to_s
# end

# 1.upto(1000) do |i|
#   puts Digest::MD5.hexdigest(i.to_s)
# end


1.upto(no_of_keys) do |i|
  digest = Digest::MD5.hexdigest(i.to_s)
  # puts digest
  puts db[digest]
end