Distributed task queues

Promgen uses Celery as a distributed system to handle asynchronous tasks such as sending alert notifications (see: Alert Worker) or pushing updates to Prometheus (see: Worker Model (Push)).

Tasks are sent to workers using Redis as the message broker. Tasks that relate to a specific Prometheus server, such as writing configuration files and reloading Prometheus, are sent to a queue named after that server. Other tasks, such as sending alert notifications, are sent to a default queue named “celery”.