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关于 mongo-driver (golang) watch 数据库修改的问题

各位,我想问下,关于 这个库的 watch 事件. 当我设置好后,初始化了 mongo的obj,如果在这个obj对象做了update, 并且也符合我定义的字段,的确会触发watch. 但是 当我直接手动在数据库中修改的时候,却获取不到. 但理论上应该可以获取到才对. 所以想问下如何才能让mongo的watch可以监听到数据库的改动,谢谢


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