[英]MongoDB Efficiency: Find + Update or Remove + Insert?
Just curious which of the following is more efficient if I want to "reset" a (single) document to its initial state if it exists, or create a new one if it doesn't. 如果我想将一个(单个)文档“重置”到其初始状态(如果存在),或者如果不存在,则创建一个新文档,下面的哪一个更有效。
Collection.remove({ initialField: "dirtyString" });
Collection.insert({ initialField: "initialString" });
or 要么
let _id = Collection.findOne({ initialField: "dirtyString" });
Collection.update(_id, { initialField: "initialString" });
Thanks! 谢谢!
用单个命令执行所有操作有什么问题?
Collection.update({ initialField: "dirtyString" }, { initialField: "initialString"});
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