[chrstphrhrt]

Just to add a bit on that, if you dynamically generate channel names according to a validatable naming convention that any consumer can predict (ideally with a client lib for generating them), you can do pretty complex message passing that doesn't blow up code complexity. Combine that with the locking and consumer groups built in, it's pretty much distributed computing "for free" even if stuck with multiprocessing for runtime scaling (e.g. Python/JS without the builtin concurrency or multithreading of VMs/hosted languages).