...享一颗CPU内的资源，理论上要像两颗CPU一样在同一时间执行两个线程，P4处理器需要多加入一个Logical CPU Pointer（逻辑处理单元）, 六合拳彩资料。因此新一代的P4 HT的die的面积比以往的P4增大了5%。
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这两步都必须处理为一个逻辑工作单元(即事务)，其中任何一个服务的失败都会向用户发送失败的信息。
Both steps have to be processed as a logical unit of work, and failure in one of the services will result in a failure message to the user.
Transaction -确定组件处理执行的逻辑工作单元。
Transaction - Determines the logical unit of work that the component's processing executes.
服务合成(service composition)是相当复杂的，而且常常涉及到事务、工作单元边界、错误处理、安全性与证书分发、以及业务逻辑聚合等方面的问题。
Service composition is highly complex and often includes transactions, unit-of-work boundaries, error handling, security and propagation of credentials, and aggregation of business logic.
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