title: Google cloud pub/sub subscription durability?
body: <p>I have been reading about Google Cloud Pub/Sub on their website, and it looks like a messaging solution that I have implemented, but I would consider moving to it so that my team does not have to maintain that code base.  One detail that I have not seen the answer to, so far, is regarding the durability of subscriptions, topics, etc, after service restarts.  I have probably missed it, and I am sure that this question must be answered somewhere, but if someone could point me to that information, I would be grateful.  Thanks in advance!</p>