Node And Mongodb - run script every 24 hours

Question

Node And Mongodb - run script every 24 hours

I am using node.js and mongoose. I need a numerical value in every mongoose document to increase by 25,000 every 24 hours.

Is There a better way than:

thing.lastUpdated = new Date();

And

if(/* check how many days(if any) since lase update */> 0){
    for(var i = 0;i<days;i++){
        //update value
    }
}

node.js
mongodb
mongoose

Answer 1

You could use node-cron to schedule an increment job

Answer 2

Depending on your use-cases, you could possibly calculate it based on a create date with a virtual:

var ThingSchema = new Schema({
    created: { type: Date, default: Date.now }
});

ThingSchema.virtual('numerical').get(function () {
    if (!this.created) return 0;

    var delta = (Date.now() - this.created) || 0;

    return 25000 * Math.floor(delta / 86400000);
});

// `created` 2 days ago
new Thing({ created: Date.now() - 172800000 }).save(function (thing) {
    console.log(thing.numerical);
});