tspawn vs starshard vs atomr-core

A thread-safe wrapper around Arc<RwLock<T>> with convenient cloning semantics and async task spawning macros

A blazing-fast sharded concurrent HashMap using hashbrown and RwLock, with lazy shards, atomic length cache, async support, conditional operations, batch operations, TTL/metrics/transactions.

Actors, supervision, dispatch, mailboxes, scheduler, FSM, event stream, and coordinated shutdown — the core of the atomr actor runtime.