Alex Vakhov developed ULID support for the tarantool/tarantool repository, implementing a full ULID specification in Lua with a performant C backend. His work introduced a new Lua module for generating, encoding, and decoding ULIDs, supporting both binary and string representations to enable efficient storage and lexicographical ordering. Alex ensured comprehensive unit testing and provided detailed user documentation, including bilingual examples, to facilitate developer onboarding. He also contributed to the tarantool/doc repository by authoring the ULID module documentation, focusing on Crockford Base32 encoding and practical usage. His contributions emphasized API design, Lua programming, and technical writing for robust feature delivery.