├── bot.php # Main entry point (webhook + polling) ├── migrate.php # Database migration script ├── scheduler.php # Scheduled tasks runner ├── composer.json # Dependencies & autoloading ├── ...
An ETL pipeline that ingests order and customer data from PostgreSQL, transforms it into regional sales metrics, and writes results to PostgreSQL (for BI/dashboards) and Parquet (for scalable storage) ...