[英]How to optimize a list all mongoose query?
In the last few days I was busy trying to improve & optimize as mush as I can the mongoose queries for a website. 在过去的几天里,我一直在努力改进和优化,因为我可以对网站进行mongoose查询。 The main thing I found for that was to use indexes which I've already done.
我发现的主要是使用我已经完成的索引。 But there's a problem... In my mongo schemas I have few "list all" queries , what I mean by that is : A query that will return everything from that model and it doesn't have any parameter .
但是有一个问题......在我的mongo模式中,我几乎没有“列出所有”查询,我的意思是:一个查询将返回该模型中的所有内容,并且它没有任何参数。
I'm currently working on NodeJS v8.15.1 with ExpressJS and MongoDB v4.0.6 我目前正在使用ExpressJS和MongoDB v4.0.6开发NodeJS v8.15.1
The kind of query I'm talking about , and the example below is one of my actually queries : 我正在谈论的那种查询,以下示例是我的实际查询之一:
ModelSchema.statics.listAll = function ( callback ){
try {
return this.find( {}, callback ).select({"x":0,"y":0});
} catch (err) {
console.log(err);
return null;
}
};
As you can see , I'm trying to get everything from that model excepting the x & y fields. 正如你所看到的,我正试图从x&y字段以外的那个模型中获取所有内容。
The query is perfectly working , there isn't any problem. 查询完全正常,没有任何问题。 As long as it doesn't use any indexed field it won't run faster or anything like that.
只要它不使用任何索引字段,它就不会运行得更快或类似。 But I wonder if there is a way to optimize it ?
但我想知道是否有办法优化它?
Thank you very much for help! 非常感谢您的帮助!
我想我已经找到了答案:我可以通过缓存请求来解决这个问题,并在每次更改时再次查询它。
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