Hey folks!

I’m happy to introduce TigerBeetlex, an Elixir client for TigerBeetle, the financial transactions database. I’ve been working on this for some time and I finally feel it’s ready for general usage.

The goal of TigerBeetle is making financial transactions safe and fast, and TigerBeetlex allows you to interact with it from the Elixir world. If you’re building applications requiring high-throughput, fault-tolerant double-entry accounting, TigerBeetle, and now TigerBeetlex, could be a great fit.

It exposes all the available operations with two different flavored APIs: a message-based one, useful to plug into and existing process architecture, and a blocking API, providing a more familiar RPC-like interface. Moreover, it translates TigerBeetle binary data back and forth to Elixir structs.

The client is built upon the official TigerBeetle Zig client as a NIF, which is the approach used by all other TigerBeetle high-level clients. The NIF is built using build_dot_zig, so it automatically downloads the Zig toolchain for you and doesn’t require any system dependency to be built.

The docs contain a walkthrough that can be executed in LiveBook and should cover all the main features, but I suggest checking out the official TigerBeetle docs, especially the recipes section, which show some really cool accounting-foo to implement concrete use cases.

I’ve also done an introductory talk to TigerBeetlex at ElixirConf EU 2025, I’ll post the recording of the talk here when it’s released.

Let me know if you have any questions or suggestions, someone on the forum was already asking for integration with Ash which was something I already had on my mind.