How subscription-consumer-transactions and subscription-consumer-events work in sentry

Hi~~ @zeeg
how subscription-consumer-transactions and subscription-consumer-events work in sentry.
I would like to know how these two consumers work in sentry and would like to know the simple inner workings of these two consumers. In the self-built service, both consumers are bound to volume due to the way the docker-compose.yml file is written, but I’d like to know if both consumers actually need to be bound to volume.
I hope to hear from you soon, thank you very much!