Launch HN: Rivet (YC W23) – Scale and Orchestrate Agents on S3

Rivet is an open-source, self-hostable, and scalable orchestrator for agentic workloads using the actor model, backed by Amazon S3 for durable storage, which is 10 times cheaper than Amazon EBS gp3 while maintaining SSD speeds. It provides a lightweight actor model with in-memory state, WebSocket server, and hibernation when idle, and is used by companies like Amp, which migrated from Cloudflare Durable Objects due to its limitations and unresponsive support. Rivet also provides a flexible architecture, allowing developers to adapt it to their own use cases without being constrained by a framework or memory, storage, and runtime limits, and is available as a Rust binary with S3 as the only dependency, allowing self-hosting, cloud deployment, or BYOC deployment. The platform provides durable writes of 1.07 ms, reads of 1.36 ms, and reads from object storage of 138 ms, and supports TypeScript and Rust for agent development, with guides and documentation available for getting started.