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How to keep grpc service definitions in sync between server and clients?

By : Wordpress777
Date : September 16 2020, 01:00 PM
wish of those help Simple: they aren't. All sync here is manual and usually requires a rebuild and redeploy, after you've become aware of a change, and have updated your .proto files.
Without updating, the fields and methods that you know about should at least keep working. You just won't have the new bits.
code :

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MS Sync Framework 2.1 Sync Clients but can't connect to clients through connection string

By : Milad.abd
Date : March 29 2020, 07:55 AM
it fixes the issue to summarize the answer based on the comments above, get you clients to connect to the server instead of the server connecting to the clients.
this way, you central server doenst have to keep track of all the clients, their addresses, client firewalls, etc...

Simultaneous gRPC clients sync/async server

By : Sai Varun Padala
Date : March 29 2020, 07:55 AM
hope this fix your issue Yes, synchronous gRPC supports multiple connected clients out of the box. I have personally tested with up to 2000 simultaneously connected clients to an microservice written in Go exposing a single API.

Using gRPC service definitions as an interface for multiple instances

By : Aref.Mousakhani
Date : March 29 2020, 07:55 AM
I hope this helps you . You can't have multiple instances of the same service on the same server. There are three main ways to solve the problem, depending on the flavor of your problem:
Combine results Include a request parameter Use different service names

gRPC: How can I distinguish bi-streaming clients at server side?

By : user2588836
Date : March 29 2020, 07:55 AM
help you fix your problem The answer depends a bit on how the clients will be identified. If the initial request provided a handle (like a username, but not registered ahead-of-time), then you could just wait for the first onNext():
code :
  public StreamObserver<Chat.ChatMessage> chat(StreamObserver<Chat.ChatMessageFromServer> responseObserver) {
    return new StreamObserver<Chat.ChatMessage>() {
      public void onNext(Chat.ChatMessage value) {
        String userHandle = value.getHandle();
        // observers would now be a map, not a set
        observers.put(userHandle, responseObserver);
  public StreamObserver<Chat.ChatMessage> chat(StreamObserver<Chat.ChatMessageFromServer> responseObserver) {
    // USER_IDENTITY is a Context.Key, also used by the interceptor
    User user = USER_IDENTITY.get();
    observers.put(user.getName(), responseObserver);
    return new StreamObserver<Chat.ChatMessage>() {

How to inspect clients that are connected to a GRPC server

By : user3027257
Date : March 29 2020, 07:55 AM
like below fixes the issue I found some more documentation and examples of channelz, other people have been suggesting it and it seems like what you want.
Here's a pull request that gives an example of channelz being used. It only uses the GetServer channelz API, so you'll have to adapt it.
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