Compound Index (enforce uniqueness by pair)

1const ShapesSchema = new mongoose.Schema({
2  name: { type: String, required: true, unique: false },
3  user: { type: mongoose.Schema.Types.ObjectId, ref: 'User', unique: false }
4})
5
6ShapesSchema.index({ name: 1, user: 1 }, { unique: true })
7
8mongoose.model('Shapes', ShapesSchema)