gRPC的newStub與newBlockingStub的區別

/**
   * Creates a new async stub that supports all call types for the service
   */
  public static GoodsServiceStub newStub(io.grpc.Channel channel) {
    return new GoodsServiceStub(channel);
  }

  /**
   * Creates a new blocking-style stub that supports unary and streaming output calls on the service
   */
  public static GoodsServiceBlockingStub newBlockingStub(
      io.grpc.Channel channel) {
    return new GoodsServiceBlockingStub(channel);
  }

通過源碼註釋可以看到：

newStub：    是創建一個新的異步的stub，可以支持所有的服務調用；

newBlockingStub:創建一個新的阻塞式的sutb，可以支持一元和流式輸出的服務調用