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Obelisk is an open-source deterministic workflow engine that runs, stores, and replays WASM-based workflows using SQLite.
There have been many changes since the initial public release 0.19.1, mostly focused on structured concurrency ergonomics, adding more abilities to activities and exploring using other languages than Rust for authoring WASM Components.
This month has already seen five Obelisk releases, each focused on adding experimental JavaScript and Go support to the runtime. Although WASM format is source-language agnostic, both JavaScript and Go needed tweaks, workarounds and sometimes upstream tooling fixes to get fully working with the WASM Component Model. In this post we'll explore rewriting an activity, workflow and a webhook from Rust. All code examples are available in the Stargazers repository.
I'm excited to introduce Obelisk, a new workflow engine I've been passionately building for over a year. You can find the project hosted at obeli.sk and the source code openly available at github.com/obeli-sk/obelisk under an Open Source license.
Recently, I shared Obelisk on Hacker News (link to story), and the response was very encouraging! It received over 100 upvotes, and the GitHub repository leaped from 14 stars to over 120 in just one day. Seeing this interest encouraged me to share more about the journey and the core ideas behind Obelisk.