From PostgreSQL to DuckLake using Azure Blob Storage

Configure your LakeXpress data pipeline with the selected components

LakeXpress Orchestrator

Manages end-to-end pipelines
Orchestrates FastBCP extracts with retries & logging
Handles incremental sync and schema-aware metadata

Control DB for increments/custom rules & logsMetadata-drivenLinux or Windows

Data

FastBCPEngine

Parquet

Data or Link

Terminal

./LakeXpress config create \
  -a data/ds_credentials.json \
  --log_db_auth_id log_db_ms \
  --source_db_auth_id datasource_postgresql_01 \
  --source_db_name sales \
  --source_schema_name "sales,dim" \
  --fastbcp_dir_path ./FastBCP_linux-x64/latest/ \
  --fastbcp_p 2 \
  --n_jobs 4 \
  --target_storage_id abs_lake_prd \
  --generate_metadata \
  --sub_path /ingest/bronze \
  --incremental_table "sales.orders:o_orderdate:date" \
  --incremental_table "sales.lineitem:l_shipdate:date" \
  --publish_method internal \
  --publish_target ducklake_tgt

# First sync - full load
./LakeXpress sync

# Subsequent syncs - incremental updates (much faster!)
./LakeXpress sync

Documentation

Get LakeXpress

Source - PostgreSQL

PostgreSQL is a powerful and robust open-source relational database. LakeXpress optimizes extractions from PostgreSQL using FastBCP's native connector for excellent performance.

Features:

•Direct streaming read from database
•Full support for PostgreSQL data types
•Secure SSL connections
•Parallel extraction to Parquet

Format - Apache Parquet

Parquet is the industry-standard columnar file format for analytics. LakeXpress uses FastBCP to extract data from source databases and convert it to Parquet format, ensuring optimal compression, query performance, and compatibility with all modern data platforms.

Advantages:

•Columnar format optimized for analytics
•Efficient compression (typically 3-10x)
•Schema evolution support
•Predicate pushdown for fast queries
•Universal compatibility with cloud platforms
•Preserves data types and precision

Cloud Stage - Azure Blob Storage

Azure Blob Storage is Microsoft's object storage solution for the cloud. LakeXpress uses Azure Blob as an intermediate staging layer for Parquet files with high performance and reliability.

Features:

•Massive scalability
•Multiple access tiers (Hot, Cool, Archive)
•Integrated with Azure ecosystem
•Built-in encryption and security
•Lifecycle management policies

Destination - DuckLake

DuckLake is an open lakehouse platform powered by DuckDB. LakeXpress stages Parquet files that DuckLake can access directly for fast analytical queries.

Publishing method:

DuckDB External Tables or COPY

Features:

•Open lakehouse architecture
•Native Parquet and Delta Lake support
•ACID transactions with DuckDB
•Fast local and remote queries
•No vendor lock-in

Related Pipelines

MySQL → ADLS → DuckLake

SAP HANA → GCS → DuckLake

PostgreSQL → ABS → Fabric

Oracle → ABS → AWS Glue

PostgreSQL → OneLake → DuckLake

Teradata → S3 → DuckLake