The Amazon EC2 service, which was in beta at the time of this writing, allows you to use the compute power of Amazon's server pool in an on-demand fashion.
Amazon EC2服务，在写作本文时还处于测试阶段，它允许以一种随需应变的方式使用Amazon服务器池的计算功能。
Add the new server to the load balancer pool.
将新的服务器添加到负载均衡池。
Typically, the application server keeps a pool of endpoints, so the second option is likely to provide for greater reuse between multiple threads.
通常，应用服务器保持一个端点池，所以第二个选项或许是为了在多个线程之间提供更好的重用而提供的。
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