Pure ruby independent ID generator like the Snowflake, ChiliFlake

This is ID generator like the Snowflake and ChiliFlake that implemented by pure ruby.

Add this line to your application's Gemfile:

gem "anyflake"

And then execute:

$ bundle

Or install it yourself as:

$ gem install anyflake

Genenate ID:

service_epoch = Time.new(2016, 7, 1, 0, 0, 0).strftime('%s%L').to_i
node_id = 1
af = AnyFlake.new(service_epoch, node_id)
af.next_id
=> 8697308774404097

Parse for the Flaked ID:

af.parse(8697308774404097)

or

AnyFlake.parse(8697308774404097, service_epoch)
=> {:epoch_time=>2073600000, :time=>2016-07-25 00:00:00 +0900, :node_id=>1, :sequence=>1}

ID structure

 upper bit(always 0)   1 bit
 epoch timestamp      41 bits
 node id              10 bits
 sequence per node    12 bits

Notice:

1. Duplicate when generate the ID of 4096 or more per node within 1ms.
   => Workaround: Unique check in the user side. (e.g. DB Pkey, unique index...)

   see https://github.com/twitter/snowflake
   see https://github.com/ma2shita/chiliflake

Bug reports and pull requests are welcome on GitHub at https://github.com/jkishimoto/anyflake.

The gem is available as open source under the terms of the MIT License.