In the absence of synchronization, it is possible to see an up-to-date value for an object reference that was written by another thread and still see stale values for that object's state.
在缺乏同步的情况下,可能会遇到某个对象引用的更新值(由另一个线程写入)和该对象状态的旧值同时存在。
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In the wake of the Ahmadi killings, some Indonesians point not just to the absence of the state when it is needed-the police failed dismally to protect the rights, let alone lives, of the Ahmadis.
It is the responsibility of our Ajax code to check for 304 status, and if found, simply not to change client application state based on the (absence of) data sent from the poll.