TimestampUuid

A naive UUID V4 compliant timestamp uuid with millisecond precision, for which also the string representation is correctly sorted by encoded timestamp. Please don't confuse it with time uuids used by e.g. cassandra where the string representation is not sortable by timestamp. The timestamp occupies 56 bit, such that it roughly works for the next 2 million years (from year 2022 on) with millisecond precision.

Install the gem and add to the application's Gemfile by executing:

$ bundle add timestamp_uuid

If bundler is not being used to manage dependencies, install the gem by executing:

$ gem install timestamp_uuid

To generate timestamp uuids:

TimestampUuid.generate
# => "00018a07-fb46-4bb0-0001-45c4003779fd"

TimestampUuid.generate(Time.parse("2023-08-12 12:00:00 CEST"))
# => "000189e9-303d-4000-0003-625c21b0936b"

To parse and instantiate timestamp uuids:

TimestampUuid.new("000189e9-303d-4000-0003-625c21b0936b")
=> #<TimestampUuid:0x00007f06d2f5a020 @sequence_number=3, @timestamp=2023-08-12 12:00:00 +0200, @uuid="000189e9-303d-4000-0003-625c21b0936b", @version=4>

That's it!

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and the created tag, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/mrkamel/timestamp_uuid. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the code of conduct.

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

Everyone interacting in the TimestampUuid project's codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.