S2-lite, an open source Stream Store
S2 was on HN for our intro blog post a year ago (https://news.ycombinator.com/item?id=42480105). S2 started out as a serverless API — think S3, but for streams. The idea of streams as a cloud storage primitive resonated with a lot of folks, but not having an open source option was a sticking point for adoption – especially from projects that were themselves open source! So we decided to build it: https://github.com/s2-streamstore/s2 s2-lite is MIT-licensed, written in Rust, and uses SlateDB (https://slatedb.io) as its storage engine. SlateDB is an…
S2-lite, an open source Stream Store launched on January 21, 2026 with 77 votes, #446 of 14,585 launches that month and more than 95% of that year's launches.
In plain words
S2-lite is an open source stream storage system written in Rust and licensed under MIT. It treats streams as a cloud storage primitive similar to S3, using SlateDB as its storage engine for durability. The tool is designed for developers and open source projects that need stream storage capabilities. It can run against object stores like AWS S3, operate entirely in-memory, or serve as a local emulator for development.
written from the facts on this page · September 2026
From the sources
Durable Streams API. Contribute to s2-streamstore/s2 development by creating an account on GitHub.
In the maker’s words, at launch
S2 was on HN for our intro blog post a year ago (https://news.ycombinator.com/item?id=42480105). S2 started out as a serverless API — think S3, but for streams. The idea of streams as a cloud storage primitive resonated with a lot of folks, but not having an open source option was a sticking point for…
Does a similar job
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Source: Show HN post ↗ · launch text quoted in part
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