In a purely garbage collected system, a circular reference is not a problem: If neither of the objects involved is referenced by any other object, then both are garbage collected.

在纯垃圾收集系统中，循环引用问题不大：若涉及到的两个对象中的一个对象被任何其他对象引用，那么这两个对象都将被垃圾收集。

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Local calls do not go through the communication layer and any objects can be passed by reference.

本地调用并不会通过通信层，所有对象均可以通过引用传递。

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In many cases, storing large objects in the session can be circumvented by just storing a key in the session and using this key as a reference to lookup a larger object in some other data structure.

在很多情况下，通过仅在会话中存储一个键，并使用该键作为引用以在其他数据结构中查找更大的对象，从而可以避免在会话中存储大对象。

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