我有一个需要分片的mongo集合。我很难理解文档；我想过以两种方式做到这一点。我的文档:publicclassMyShardedDocument{publicintDocID;publicintAnotherIDThatMatters;}方法一:添加名为ShardKey=DocID.ToString()+AnotherIDThatMatters.ToString()的属性在ShardKey上添加索引sh.shardCollection("myDB.myCollection",{"ShardKey":1})方法二:在DocID上添加复合索引，AnotherIDThatMatterssh.