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mongodb _id类似于uuid全局唯一,还是文档内唯一.
黄舟
2017-05-02 09:23:05
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黄舟
人生最曼妙的风景，竟是内心的淡定与从容！
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滿天的星座
2017-05-02 09:25:05
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I know,
The only one in the document.