node.js - Mongoose "expires" deletes document too quick

Question

I'm trying to create auto-expiring Mongoose document by setting expires.

const mySchema = new mongoose.Schema({
   title: {
      type: String,
      required: true
   },
   content: {
      type: String,
      required: true
   },
   expireAt: {
      type: Date,
      default: Date.now,
      index: { expires: 1200 } // Delete after 20 minutes.
   }
}, { collection: 'mycollection', timestamps: true });

I want it to terminate after 20 minutes but it keeps on terminating after about 1 - 2 minutes.

I've tried { expires: '20m' } as well which also deletes document after about 1 - 2 minutes.

Answer 1

等待大神答复