Cost of Google Cloud PubSub when there are no messages

Question

I was taking a look Pub/Sub pricing and I couldn't get what would be the price if the subscriber hit the endpoint but doesn't get any message. Because my idea is run a worker 24 hours.

Answer 1

With the pricing model as of today, if your subscriber sends a Pull or StreamingPull request (either directly or through the client libraries), it will not incur a cost if no messages are returned. Billing for subscribers is based on the number of bytes in the messages sent to the subscribers per month.