An application layer to process business logic, like accepting orders or choosing content to display.
应用层用于处理业务逻辑，例如接受订单或者选择显示的内容。
For example, at any given time the computer might be printing payroll checks, accepting orders, and testing programs.
例如，任何时刻，一台计算机既可打印工资单，同时又可接收订单，也可测试程序。
Due to limited production capacity, they are forced to turn down 90 percent of their potential business, only accepting orders from old clients.
由于生产能力有限，他们被迫拒绝掉了90%潜在的业务，只接受老客户的订单。
CAP is fine-grained. You can make different choices in different parts of your system. For example, for accepting orders, usually availability is desirable as you don't want to lose the orders!
CAP是细粒度的。你可以在系统的不同部分使用不同的选择。比如，在接受订单的时候，往往可用性是值得保证的因为你不想失去订单。
CAP is fine-grained. You can make different choices in different parts of your system. For example, for accepting orders, usually availability is desirable as you don't want to lose the orders!
CAP是细粒度的。你可以在系统的不同部分使用不同的选择。比如，在接受订单的时候，往往可用性是值得保证的因为你不想失去订单。
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