kevy-rt

A shared-nothing, thread-per-core runtime in pure Rust. Part of kevy.

Each core runs its own kevy-net reactor and owns one shard of the keyspace (hash(key) % nshards). There is no shared mutable state and no lock on the hot path — cores coordinate only by message passing, woken via a self-pipe. Connections spread across cores by SO_REUSEPORT; a command whose key lives on another core is forwarded there, executed, and the reply routed back, with per-connection reply ordering preserved (RESP is pipelined).

• Adaptive busy-poll: a spinning core sees cross-core messages with no wakeup syscall; it parks (with a backstop timeout) only when idle.
• Cross-shard fan-out + gather for multi-key commands; cross-core pub/sub delivery; per-connection transaction (MULTI/EXEC) state.
• Command set injected via the Commands trait — the runtime is independent of any particular protocol. Store is re-exported for convenience.
• #![forbid(unsafe_code)].

Implement Commands, then Runtime::new(ip, port, nshards, cmds).run(stop). See the crate docs for a complete example.

License

Licensed under either of MIT or Apache-2.0 at your option.