Data Engineering Archives

Querying PostgreSQL, MySQL, and MinIO with Trino: A Single SQL Interface for Multi-Source Data Analysis

August 24, 2026

Learn how to use Trino to run federated SQL queries across PostgreSQL, MySQL, and MinIO S3. This guide covers setup, configuration, and performance tips for multi-source data analysis without ETL.

Database

Mastering Apache Pinot: Real-time OLAP for Sub-Second Analytics

August 22, 2026

Struggling with slow analytical queries? Discover how Apache Pinot delivers sub-second latency on massive datasets by integrating directly with Kafka streams.

Database

Deploy Airbyte on Docker: Automate ELT Data Sync Across Databases and Warehouses

August 19, 2026

Manual data pipelines between databases and warehouses break down fast as your stack grows. Airbyte on Docker gives you a self-hosted ELT platform with 300+ connectors — this guide walks through deployment, configuring a PostgreSQL source, choosing the right sync mode, and monitoring jobs from day one.

Programming

Stop Waiting for Pandas: A Practical Guide to Polars for Massive Datasets

June 9, 2026

Is Pandas crashing your system? Discover how Polars uses Rust, multi-threading, and lazy evaluation to process massive datasets up to 10x faster with a fraction of the memory.

Database

Scalable ELT: How We Replaced 2,500 Lines of SQL with dbt and Postgres

June 8, 2026

Ditch the broken stored procedures. Learn how we used dbt and PostgreSQL to turn a 2,500-line SQL nightmare into a modular, tested, and high-performance ELT pipeline.

Database

Scaling Beyond CSV: High-Performance Data Engineering with Parquet, Arrow, and DuckDB

May 30, 2026

Learn why CSVs fail at scale and how Apache Parquet and Arrow revolutionize data processing. This guide demonstrates how to use Python and DuckDB to build high-performance analytics pipelines.

Database

Kill the Small Files Nightmare: Modernizing Data Lakehouses with Apache Iceberg

May 27, 2026

Tired of corrupted S3 folders and the 'small files' lag? Learn how Apache Iceberg brings ACID reliability, instant schema changes, and time travel to your data lakehouse.

Database

PostgreSQL Bulk Imports: How to Move Millions of Rows Without the Wait

May 17, 2026

Tired of slow database migrations? Learn how to use the COPY command, multi-row inserts, and WAL tuning to import millions of records into PostgreSQL in minutes.

Clean Data, Better RAG: Mastering Microsoft MarkItDown for Python Pipelines

May 9, 2026

Boost your RAG system's accuracy by standardizing data ingestion. Learn how to use Microsoft MarkItDown and Python to convert complex PDFs, Excel, and Word files into clean, LLM-friendly Markdown.

Database

Mastering DuckDB: The ‘SQLite for Analytics’ That’s Replacing Pandas

April 22, 2026

Is Pandas crashing your machine? Discover how DuckDB, a high-performance analytical database, lets you run lightning-fast SQL queries on massive local datasets with minimal memory usage.