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# Nats Service
The nats service is the event broker of the system. It distributes events among all other services and enables other services to communicate asynchrounos.
The nats service is the event broker of the system. It distributes events among all other services and enables other services to communicate asynchronous.
Services can `Publish` events to the nats service and nats will store these events on disk respectively distribute these events to other services eventually. Services can `Consume` events from the nats services by registering to a `ConsumerGroup`. Each `ConsumerGroup` is guaranteed to get each event exactly once. In most cases, each service will register its own `ConsumerGroup`. When there are multiple instances of a service, those instances will usually use that `ConsumerGroup` as common ressource.
Services can `Publish` events to the nats service and nats will store these events on disk and distribute these events to other services eventually. Services can `Consume` events from the nats service by registering to a `ConsumerGroup`. Each `ConsumerGroup` is guaranteed to get each event exactly once. In most cases, each service will register its own `ConsumerGroup`. When there are multiple instances of a service, those instances will usually use that `ConsumerGroup` as common resource.
## Underlying technology