Galena is a topic producer-consumer library built on top of GenStage.

Galena has three main behaviours that could be used in order to create complex data pipelines with topics:

• Galena.Producer is a customized GenStage producer which will serve the produced events as soon as possible.

• Galena.Consumer is a customized GenStage consumer whith the capability of connecting to a list of topics of producers and/or producer-consumer(s).

• Galena.ProducerConsumer is a customized GenStage producer-consumer which will receive messages from the list of topics of those producers and/or producer-consumer(s) which was subscribed and will send the produced events as soon as possible.