How do you backup and restore MongoDB?

# Backup entire database
mongodump --uri="mongodb://localhost:27017/mydb" --out=/backup

# Backup specific collection
mongodump --db=mydb --collection=users --out=/backup

# With compression
mongodump --uri="mongodb://localhost:27017/mydb" --gzip --out=/backup

# Restore
mongorestore --uri="mongodb://localhost:27017" /backup/mydb

# Restore specific collection
mongorestore --db=mydb --collection=users /backup/mydb/users.bson

# Export to JSON
mongoexport --db=mydb --collection=users --out=users.json

# Export to CSV
mongoexport --db=mydb --collection=users --type=csv --fields=name,email --out=users.csv

# Import
mongoimport --db=mydb --collection=users --file=users.json

# Import with upsert
mongoimport --db=mydb --collection=users --file=users.json --upsertFields=email

- Continuous backup with point-in-time recovery
- Automated snapshots
- Cloud provider snapshots

const { exec } = require('child_process');

function backup() {
  const date = new Date().toISOString().split('T')[0];
  const cmd = `mongodump --uri="${MONGO_URI}" --gzip --out=/backups/${date}`;

  exec(cmd, (error, stdout, stderr) => {
    if (error) console.error('Backup failed:', error);
    else console.log('Backup completed');
  });
}

// Schedule daily backup
setInterval(backup, 24 * 60 * 60 * 1000);