Make your aisdk chat app crash proof by using s2.dev as the persistence layer behind useChat!

s2 cell architecture diagram

Curious about the architecture of S2? This is how we cook infinite durable streams for you.

s2-lite is here – an open source @s2.dev Stream Store! It's a single binary you can run anywhere. Powered by SlateDB, so you can point it at an object storage bucket for durable streams with real-time reads. github.com/s2-streamsto...

Thankful to the @s2.dev team for all the progress we made this year! Really excited for 2026.

Some highlights 🧵

@s2.dev YC-launched today!

www.ycombinator.com/launches/OnP...

GitHub - s2-streamstore/s2: Durable Streams API Durable Streams API. Contribute to s2-streamstore/s2 development by creating an account on GitHub.

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"This is the home of s2-lite — an open source, self-hostable implementation of the S2 API for durable streams. It will be backed by SlateDB, and it is currently in development."

just tried out the real-time TodoMVC example with @livestore.dev + @s2.dev as the durable sync provider, and honestly its crazy how fast it is!

local SQLite, works offline, real-time updates and no complex setup, just works

Excited to share y-s2, an open-source serverless backend for real-time collaborative applications using Yjs and @s2.dev!

Read records. - S2 Retrieve a batch of records, or continuously stream.

S2's REST API now supports long polling, besides SSE!

Long polling is a simple way for client-driven consumption with stateless HTTP requests.

You just need to specify the ?wait=<seconds> query parameter. If no records are available, the response will only return after the duration elapses.

GitHub - s2-streamstore/cachey: Read-through cache for object storage Read-through cache for object storage. Contribute to s2-streamstore/cachey development by creating an account on GitHub.

We open sourced a read-through cache for S3, called Cachey github.com/s2-streamsto...

OpenTelemetry - S2

OpenTelemetry 🤝 @s2.dev

Are you building infrastructure for sandbox environments (e.g., agent sandbox, CI/CD sandbox) and want to stream execution logs to users in real time? If so, check out s2.dev/docs/integra... and let us know what you think.

Linearizability testing S2 with deterministic simulation How we validate strong consistency

I wrote a bit about how we verify linearizability of @s2.dev using Porcupine! s2.dev/blog/lineari...

Added some visibility into usage metrics to the @s2.dev dashboard!

s2.dev got a refresh ✨

Can you build a realtime BBS on s2? Yes, in fact... s2.dev/playground

screenshot of blog post titled `Stream per agent session`

Agents need granular streams. And yes, @s2.dev fits the bill nicely!

s2.dev/blog/agent-s...

GitHub - chucklehead-dev/s2-log Contribute to chucklehead-dev/s2-log development by creating an account on GitHub.

Super cool XTDB plugin from @chuck.cassel.dev, which implements the write-ahead log using @s2.dev streams: github.com/chucklehead-...

Change data capture from Postgres is simple with the right tools. We collaborated with sequinstream.com on an integration so you can use @s2.dev to ship real-time features faster!

Had a lot of fun with this 😄 – a multiplayer, "instant re-playable" pseudoterminal that uses @s2.dev streams as a transport instead of SSH: s2.dev/blog/s2-term

You can now safely share @s2.dev streams directly with end clients like browsers, apps, or agents! No proxying required. Check it out, s2.dev/blog/access-...

Kind words from Chris about S2! I felt strongly that we needed to not hitch our wagon to Kafka. It is not even a priority for us, for now. This may seem like a strange analogy... but if Kafka is OLAP, we want to be OLTP. See this demo to understand what I mean: s2.dev/docs/integra...

S2 via MCP in Claude Desktop YouTube video by S2, the Stream Store

@s2.dev now has an MCP server! The entire API is available for tool-use by AI assistants like Claude -- see it in action here: www.youtube.com/watch?v=wLFk...

S2 is starting to do some really interesting stuff…

S2 now supports timestamps! 🕰️

How we made streams understand time: s2.dev/blog/timesta...

Create streams on the fly with ease. Just turn on this setting for your basin.

@s2.dev

The S2 CLI makes it super easy to manage basins and streams - but now you can also do a lot from within the dashboard!

@s2.dev

DST for async Rust Taming distributed systems with deterministic simulation testing.

I blogged about our DST journey with @s2.dev s2.dev/blog/dst

Announcing the Bytewax Connector for S2! – bytewax We’re excited to introduce the Bytewax connector for S2 (Stream Store). S2’s philosophy—that **the stream deserves to...

Bytewax connector for @s2.dev is out now!

bytewax.io/blog/s2-conn...

Building a KV-store with S2 ● Multi-primary, horizontally scalable, distributed KV-store ● All writes regionally durable ● Linearizable reads from all replicas https://github.com/s2-streamstore/s2-kv-demo

Talk 24: "Serverless primitives for the shared log architecture" by Stephen Balogh (@sbalogh.bsky.social)

GitHub - s2-streamstore/flink-connector-s2: Flink connector for S2 [WIP] Flink connector for S2 [WIP]. Contribute to s2-streamstore/flink-connector-s2 development by creating an account on GitHub.

We're also releasing an alpha version of a Flink connector for S2 streams: github.com/s2-streamsto...

See the demos for an example real-time feature pipeline for turning beacons (stored on S2) into complex events, and ultimately a dynamic table of ML features stored upsert-style on an S2 stream.