Demo for Symfony's PR 30572

cd /path/to/your/symfony/fork
git fetch git@github.com:symfony/symfony refs/pull/30572/head:cache-bus
git checkout cache-bus

cd /path/to/your/fork/of/this/repo
composer install
/path/to/your/symfony/fork/link .
APP_ENV=prod symfony server:start -d
APP_ENV=prod bin/console messenger:consume -vv
firefox https://127.0.0.1:8000/demo

Requirement: a running server on amqp://guest:guest@localhost:5672/%2f/messages

Proof it works: