MQTT Broker
MQTT broker serves as a front controller and entry point for every connected MQTT client.
All MQTT data goes through MQTT broker, which processes it in some form and send to Apache Kafka.
Kafka topic
Every client has it's own topic by its ID.
MQTT topics
$SYS
Implements (URL TODO)
$SYS/broker/clients/connected
- number of currently connected MQTT clients
Redis
Redis used used for storing broker's meta data.