DuckLake is an integrated data lake and catalog format.

DuckLake architecture:

OpenTable format traits:

• Reliable ACID transactions
• Advanced data skipping
• Time travel
• Schema enforcement and evolution
• Full CRUD operations

• PostgreSQL database for metadata storage
• MinIO for data storage

• lake1: a lake with DuckDB and MinIO
• lake2: a lake with DuckDB and Local File System
• lake2: a lake with PostgreSQL and MinIO

Please refer to justfile for commands.

• Start PostgreSQL and MinIO using Docker Compose: docker-compose up -d
• Use DuckDB CLI to create a new lake: duckdb --cmd "ATTACH 'ducklake:lakes/lake2.ducklake' AS lake2; use lake2;"
• Create city table from demo.sql

With public schema by default:

ATTACH 'ducklake:postgres:dbname=ducklake host=127.0.0.1 port=55432 user=ducklake password=123456' as lake3 (DATA_PATH 's3://lake3');

Assigned schema:

ATTACH 'ducklake:postgres:dbname=ducklake host=127.0.0.1 port=55432 user=ducklake password=123456' as lake3 (DATA_PATH 's3://lake3', METADATA_SCHEMA 'ducklake');

Secret style:

-- secret for MinIO
create
secret ducklake_oss (
       type s3,
       key_id 'minioadmin',
       secret 'minioadmin',
       endpoint '127.0.0.1:9000',
       use_ssl false,
       url_style 'path'
);

CREATE
SECRET catalog1 (
	TYPE DUCKLAKE,
	METADATA_PATH 'postgres:dbname=ducklake host=127.0.0.1 port=55432 user=ducklake password=123456',
	DATA_PATH 's3://lake1',
    METADATA_SCHEMA 'ducklake'
);

ATTACH
'ducklake:catalog1' AS catalog1;

Attention: Please refer Add support for using secrets to manage DuckLake options and credentials

• Neon: Ship faster with Postgres
• Tigris: Globally Distributed S3-Compatible Object Storage

• DuckLake
• Welcome to the age of $10/month Lakehouses: https://tobilg.com/the-age-of-10-dollar-a-month-lakehouses
• Learn How to Use DuckLake with DuckDB to Build Datalakes on S3: https://medium.com/@shahsoumil519/learn-how-to-use-ducklake-with-duckdb-to-build-iceberg-tables-on-s3-274ca0495261
• DuckLake: This is your Data Lake on ACID https://www.definite.app/blog/ducklake
• Digging into Ducklake: https://rmoff.net/2025/06/02/digging-into-ducklake/
• DuckLake — DB over File sprawl: https://medium.com/dev-genius/ducklake-db-over-file-sprawl-6613e5c07028
• From DuckDB to DuckHouse: https://juhache.substack.com/p/from-duckdb-to-duckhouse
• Getting Started with DuckLake: A New Table Format for Your Lakehouse: https://motherduck.com/blog/getting-started-ducklake-table-format/
• Homemade Change Data Capture into DuckLake: https://medium.com/@wergstatt/homemade-change-data-capture-into-your-private-lake-e4978ebc23a7
• DuckDB enters the Lake House race: https://dataengineeringcentral.substack.com/p/duckdb-enters-the-lake-house-race
• Get your data ducks in a row with DuckLake: https://www.tigrisdata.com/blog/ducklake/
• Understanding Open Table Formats: https://delta.io/blog/open-table-formats/
• Data Time Travel with DuckLake and Tigris: https://www.tigrisdata.com/blog/ducklake-time-travel/
• Extract data from Databases into DuckLake: https://blog.slingdata.io/extract-data-from-databases-into-ducklake
• Thinking about DuckLake Architecture: https://www.linkedin.com/pulse/thinking-ducklake-architecture-miguel-peredo-z%C3%BCrcher-lt5ff/
• Building a Complete DuckLake Solution: From Local Development to Cloud Production: https://cfocoder.com/building-a-complete-ducklake-solution-from-local-development-to-cloud-production/
• Introducing target-ducklake: A Meltano Target For Ducklake - https://www.definite.app/blog/target-ducklake
• DuckLake on Apache Superset: https://medium.com/data-analytics-at-nesta/ducklake-on-apache-superset-d1b1b00c222a
• DuckLake for busy engineering managers: https://blog.incrementalforgetting.tech/p/ducklake-for-busy-engineering-managers
• What is DuckLake? The New Open Table Format Explained https://estuary.dev/blog/what-is-ducklake/
• Introducing DuckLake: Lakehouse Architecture Reimagined for the Modern Era - https://endjin.com/blog/2025/06/introducing-ducklake-lakehouse-architecture-reimagined-modern-era
• How Tables Grew a Brain: Iceberg, Hudi, Delta, Paimon, DuckLake https://medium.com/fresha-data-engineering/how-tables-grew-a-brain-iceberg-hudi-delta-paimon-ducklake-a617f34da6ce
• DuckLake by DuckDB Labs: https://www.ssp.sh/brain/ducklake/
• DuckLake: Learning from Cloud Data Warehouses to Build a Robust "Lakehouse": https://www.youtube.com/watch?v=z2GhznqtIz0
• Tech Review: DuckLake - From Parquet to Powerhouse: https://thefulldatastack.substack.com/p/tech-review-ducklake-from-parquet
• Is DuckLake a Step Backward? https://www.pracdata.io/p/is-ducklake-a-step-backward