java - RMI服务器如何响应多个RMI客户端调用？

Question

我构建了一个基于 RMI 客户端-服务器的文件下载器应用程序。在那方面，我不了解不同客户的工作。文件位于服务器端，RMI 在其端有等效的代理服务器(称为 stub )。我为此应用程序使用了 10 个客户端和 1 个服务器。

Question 1- My question is when multiple clients simultaneously make RMI invocation after lookup from the registry, in what order does client seed/provide them the file? Means the underlying serving algorithm --- Is it Round Robin Algorithm OR FIFO algorithm OR some other?

我无法弄清楚这一点，当我执行代码时，我只是看到各个文件正在同时下载，就好像文件正在复制而不是下载一样。

Question 2- How could a single server serve so many clients and in what order such that the files are getting simultaneously downloaded?

另外，我的服务器端方法没有同步，不需要同步!

Answer 1

Question 1- My question is when multiple clients simultaneously make RMI invocation after lookup from the registry, in what order does client seed/provide them the file?

不分先后顺序。它们都是同时进行的。

Means the underlying serving algorithm --- Is it Round Robin Algorithm

没有。

OR FIFO algorithm

没有。

OR some other?

没有。没有订购。

I am not able to figure this out, when I execute my code I just see that the respective files are being simultaneously downloaded as if files are being copied instead of downloading.

我不知道“复制而不是下载”是什么意思，但“同时”准确地描述了情况。

Question 2- How could a single server serve so many clients and in what order such that the files are getting simultaneously downloaded?

通过多线程，或者熟练使用多路复用 I/O，或者异步 I/O。没有指定。没有指定任何内容。您不能假设的一件事是它是单线程的并且以任何方式顺序化。

Also, my server side method isn't synchronised, there is no need of synchronisation!

另一个假设，同样完全无效。 RMI 规范中没有任何内容可以证明这一信念。您不能假设 RMI 远程对象是单线程的。