Google Cloud Pub/Sub Publisher Lifecycle

Question

I'm running a Cloud Pub/Sub PublisherClient instance as a Singleton in an ASP.NET web application (.NET Standard 2). Does this retain a persistent HTTPS connection to the specified Cloud Pub/Sub Topic and should I call the ShutdownAsync method explicitly, or just let the connection be severed when the app pool recycles?

Running this in conjunction with Quartz.NET, publishing messages to Pub/Sub in relatively small batches, every 30 seconds. This seems to introduce server affinity in a 3-node Azure Load Balancer cluster, where the majority of traffic is routed to any given node after running for 1+ hours. Not 100% sure about best practices here.

Using Pub/Sub C# NuGet package V1 1.0 and Quartz NuGet 3.0.7

Answer 1

I assume you’re using this PublisherClient. Per the sample documentation, the PublisherClient instance should be shut down after use. This ensures that locally queued messages get sent. See also the ShutdownAsync documentation.