Google Pub/Sub

Pub/Sub is Googles serverless managed messaging service. (Like a managed version of Kafka).

Pub/Sub scales automatically.

Pub/Sub overview

Google PubSub holds messages for up to 7 days.

At least once guaranteed delivery.

It is necessary to acknowledge messages received by Pub/Sub. If Pub/Sub does not receive acknowledgement in time it will send the message again.

Pub/Sub in detail video series