It should be noted that the sizeof the in-memory business object (BO) can be much larger than the representation available on the wire.
应该注意,内存中业务对象(BO)的大小可能比线路上可用的表示要大得多。
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Much of the time, the sizeof XML really makes no difference — hard disks are cheap, and the time on the wire might be only a small part of the total time in the process.