Channels (mpsc) for message passing between threads

Rust's mpsc (multiple producer, single consumer) channels are the safest way to communicate between threads. You send owned values through the channel, transferring ownership to the receiver. This prevents data races because only one thread owns the data at a time. The sender can be cloned for multiple producers, and the receiver blocks or returns Err when all senders are dropped. I use channels for worker pools, event loops, and anywhere I need backpressure or decoupling. The pattern is similar to Go's channels but with Rust's ownership guarantees. For more complex topologies, I reach for crossbeam or tokio::sync, but mpsc covers most use cases and is part of the standard library.