Identifier is a Ruby unique identifier generator that wraps the UNIX, Linux and Macintosh 'uuid' library.

You need a UUID from some string. Maybe a URL shortner without a database, or some kind of ID passed as parameter. This gem uses Huffman Coding [http://en.wikipedia.org/wiki/Huffman_coding] and base 36 integers [http://en.wikipedia.org/wiki/Base_36] to create such ID.

Stop hitting the DB with every secure-token submission. Encoded Tokens have the ID, or UUID, encoded within the token itself - increasing both security and performance. Coded in plain Ruby, EncodedToken is framework agnostic.

The UUID gem

Sequel Model plugin that adds [0-9a-z] unique id prefixed by a custom string.

Generate secure 64-bit integers using the same approach used by UUIDs.

Finds linked posts using UUIDs to make them available to Liquid

Sole helps with generating unique identifiers similar to a UUID or ULID but packing in additional metadata to make it useful for storage solutions.