title: google cloud pub sub multiple subscriber for the same message with the same subscription
body: <p>I am working on implementing event driven using GCP Pub/Sub.</p>
  <p>I have a topic called orders, and that topic will have a subscription named <code>orderPlacedSubscription</code> I have two services that want to listen to all messages for this subscription and perform different actions,
  so I have paymentService and notificationService, the paymentService will listen to each message filtered by <code>orderPlacedSubscription</code> and process the payment as well as the notification service will listen to the same message and send a notification.</p>
  <h3>My question</h3>
  <ul>
  <li>does pub-sub support having two subscribers related to one subscription and both receive messages and acknowledge them separately?</li>
  <li>In case if each subscriber can acknowledge the message separately without affecting the other subscriber, does google cloud pub-sub support retry for different subscribers in case of failure from one subscriber?</li>
  </ul>