锁粗化就是把使用同一锁对象的相邻同步块合并的过程。
Lock coarsening is the process of merging adjacent synchronized blocks that use the same lock object.
在一次后续扫描中，如果新计算的校验和不等于此前计算的校验和，则该页面正在更改，因此不是一个合格的合并候选对象。
On a subsequent scan, if a newly computed checksum is different from the previously generated checksum, the page is changing and is therefore not a good candidate for merging.
这种数据同步模式还可以从应用程序特定的格式到通用格式合并业务对象的映射。
This data synchronization pattern can also incorporate mapping of the business object from an application-specific format to a generic format.
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