# Tellus 0.5: clustered actors for Rust **URL:** \ **Category:** announcements\ **Created:** [November 2, 2026, 2:38pm UTC](https://users.rust-lang.org/t/tellus-0-5-clustered-actors-for-rust/143435 "2026-11-02T14:38:05Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![hseeberger](https://sea1.discourse-cdn.com/flex019/user_avatar/users.rust-lang.org/hseeberger/32/25462_2.png) [@hseeberger](https://users.rust-lang.org/u/hseeberger)\ **Post date:** [November 2, 2026, 2:38pm UTC](https://users.rust-lang.org/t/tellus-0-5-clustered-actors-for-rust/143435/1 "2026-11-02T14:38:05Z")
[tellus](https://tellus.rs) is an actor framework for Rust built on Tokio: synchronous message handlers, death watch with an ordering guarantee, supervision and event sourcing. Since 0.4.0 its actors can form a cluster. An `ActorRef` is serializable, so `tell`, `ask` and `watch` work the same on an actor in another process or on another machine. The cluster has no leader: members gossip their list, a phi accrual failure detector marks silent members unreachable, and a pluggable downing provider (`KeepMajority` by default) decides who is gone. On top of that come remote death watch, a receptionist and pub-sub, bootstrap through DNS or Kubernetes, mutual TLS bound to node addresses, and a graceful leave. It is meant for clusters of tens of nodes, not yet (optimizations are planned) for hundreds. I wrote up what it does, with code and a recording of a five node cluster under permanent chaos: [tellus 0.5: the same ActorRef, across machines: Heiko Seeberger](https://heikoseeberger.de/2026-11-02-tellus-cluster/) - Docs and the clustered actors tutorial: [https://tellus.rs](https://tellus.rs) - Crate: [crates.io: Rust Package Registry](https://crates.io/crates/tellus) - Code: [GitHub - tellus-rs/tellus: An actor framework for Rust: typed messages, supervision trees, death watch, event sourcing. ยท GitHub](https://github.com/tellus-rs/tellus) Feedback and questions are very welcome.