@chevre/domain/example/src/chevre/db/stats.ts

Chevre Domain Library for Node.js

// tslint:disable:no-console
import * as mongoose from 'mongoose';

const KILO_BYTES = 1024;
async function main() {
    await mongoose.connect(<string>process.env.MONGOLAB_URI, { autoIndex: false });

    let storageStats;
    // const stats = await mongoose.connection.db.collection('tasks')
    //     .stats({
    //         scale: KILO_BYTES * KILO_BYTES
    //     });
    storageStats = (await mongoose.connection.db.collection('tasks')
        .aggregate([{
            $collStats: {
                storageStats: {
                    scale: KILO_BYTES * KILO_BYTES
                }
            }
        }])
        .limit(1)
        .toArray())
        .at(0)?.storageStats;

    console.log('scaleFactor:', storageStats.scaleFactor);
    console.log('avgObjSize:', storageStats.avgObjSize);
    console.log('count:', storageStats.count);
    console.log('size:', storageStats.size);
}

main()
    .then(() => {
        console.log('success!');
    })
    .catch(console.error);