No? I don't know where you could have got that impression but you can make as many as you like, and share them between Servers as you please.
On Monday, February 27, 2017 at 3:51:57 PM UTC-8, Ryan Michela wrote: > > I mean the instance of the class that implements my service operations. > The instance you pass to ServerBuilder.addService(). > > Isn't that instance a singleton from the perspective of gRPC? > > On Monday, February 27, 2017 at 12:48:41 PM UTC-8, Carl Mastrangelo wrote: >> >> What do you mean by Service? There are hardly any places in our code >> where something is a singleton. >> >> On Saturday, February 25, 2017 at 10:31:59 PM UTC-8, Ryan Michela wrote: >>> >>> I'd like to know the design rationale for why gRPC services >>> implementations are all concurrently executing singletons. There are many >>> possible instancing and threading modes that could have been used. >>> >>> - Singleton instancing >>> - Per-call instancing >>> - Per-session instancing >>> >>> >>> - Concurrent execution >>> - Sequential execution >>> >>> Concurrent singletons make sense from an absolute throughput angle - no >>> object instantiation or blocking. But concurrent singletons are hardest for >>> developers to work with - service implementors must be keenly aware of >>> shared state and mult-threading concerns. >>> >>> 1. Why was concurrent singleton chosen as the only out-of-the-box >>> way to implement gRPC (java) services? >>> 2. Would API for supporting other threading and instancing modes be >>> accepted in a PR? >>> >>> -- You received this message because you are subscribed to the Google Groups "grpc.io" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/grpc-io. To view this discussion on the web visit https://groups.google.com/d/msgid/grpc-io/3889e4a5-3e45-400f-b72b-c0d5bfc51f94%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
