Sling

About Sling

A CLI data integration tool specialized in moving data between databases and storage systems. Sling provides a simple command-line interface for extracting and loading data with support for incremental syncs, transformations, and multiple output formats.

Key Features

• 1Lightweight CLI tool for syncing data between databases and file storage
• 2Supports PostgreSQL, MySQL, Snowflake, BigQuery, S3, and local files
• 3Replication mode handles full, incremental, and snapshot syncs
• 4Go-based binary with a simple YAML replication config format
• 5Python SDK available for programmatic pipeline configuration

How Python Data Engineers Use Sling

Python data engineers use Sling via its Python SDK or CLI subprocess calls to replicate tables between databases or load files into warehouses. A common use case is syncing a production PostgreSQL table into Snowflake for analytics — Sling handles chunking, type mapping, and incremental state without requiring any custom Python ingestion code.