Pure ruby independent ID generator like the SnowFlake, ChiliFlake

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

Installation

Add this line to your application's Gemfile:

gem "anyflake"

And then execute:

$ bundle

Or install it yourself as:

$ gem install anyflake

QuickStart

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}

Overview

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

Contributing

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

License

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