这些因素的组合影响系统可以处理的负载的数量，这个数量每次都是不同的。
The combination of these factors influences the amount of load the system can handle, which may vary from time to time.
可以通过应用程序设计、服务器集群化、负载平衡、复制或所有这些方法的组合来实现此目标。
This can be achieved through application design, server clustering, load balancing, replication, or a combination of all of these elements.
比起较早的迭代，这些组合的测试一般在较高的负载下执行，并且还至少执行二十四小时。
These combined tests were typically run under higher load than in earlier iterations and also run for at least twenty-four hours.
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