使用NodeJS在MongoDb中创建文档后1个月后删除文档

Question

I have a log collection and would like to remove logs which have been created 1 month ago.

I am using Mongoose in NodeJS and I've tested with "minute" parameter and it worked. But the problem that I want to be sure that the documents will be deleted one month later.

Here what I did

const mongoose = require('mongoose');
const Schema = mongoose.Schema;
mongoose.set('useCreateIndex', true);
mongoose.connect('mongodb://localhost:27017/blabla', {useNewUrlParser: true});
mongoose.Promise  = global.Promise;



var Logs = new Schema({

AppName:{
    type: String,
    required: [true,'Application Name field is required']
},  
CreatedDate:{
    type: Date,
    required: [true,'Created Date field is required'],        
},
ExpireAt: { type: Date, default: Date.now, expires: '2m' },

});

module.exports.Logs = mongoose.model('logs', Logs);    

as you can see, "expires" paramter has 2m (2 minutes) My concern that If I give "1M" (one month), would it accept it? I have not found acceptable paramters.

http://www.albertgao.xyz/2019/02/07/how-to-auto-delete-mongodb-records-after-certain-time-with-mongoose/

I've tried to give direct date + 1month or numeric value as seconds but did not work.

So how can I let delete documents one month later after their creations..

Answer 1

You can do it with 1m like as following snippet ,

expireAt: {
  type: Date,
  default: Date.now,
  index: { expires: '5m' },
},

5m is a shortcut here, you can refer to this package to check how to use words rather than number to make the setup more readable.