Target finder to a subset of slices.
将查找定向给片的子集。
There is no default finder target policy, thus find looks for an instance in all slices by default.
由于没有默认的查找定向策略,因此,find会默认地在所有片内查找一个实例。
A Finder Target Policy is quite similar to Query Target Policy except that there are no bound parameters for a find call.
查找定向策略与查询定向策略相似,只不过,这里没有find调用的绑定参数。
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