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假如说一个产品n个评论，直接存放到mongo的一个document，会不会有问题？通过python或者php读到redis有没有问题？
为情所困2017-04-26 09:03:18
No problem, what are you worried about
曾经蜡笔没有小新2017-04-26 09:03:18
Imagine the user who made these comments has changed their name
