Query & Context

Daily engineering deep-dives at the intersection of Big Data and AI.

Featured

Data Engineering

Feb 5, 2026

•

3 min read

Stop cleaning data before you save it.

Issue #036: Why ETL is dying and ELT is taking over.

Harsh Kathiriya

Data Engineering

Why you shouldn't use Postgres for analytics

Feb 3, 2026

•

4 min read

Why you shouldn't use Postgres for analytics

Issue #034: The physics of Data Storage (Row vs. Column)

Harsh Kathiriya

Data Engineering

How to extract data without crashing production

Feb 2, 2026

•

4 min read

How to extract data without crashing production

Issue #033: Batch vs. Streaming (DE 101 Part 1)

Harsh Kathiriya

Data Engineering

Stop learning tools. Start learning systems.

Feb 1, 2026

•

3 min read

Stop learning tools. Start learning systems.

Issue #032: The 5 Pillars of Data Engineering (DE 101 Series). The Roadmap to Learning Data Architecture

Harsh Kathiriya

Career & Mindset

Why we spent 4 hours discussing a button color

Jan 31, 2026

•

4 min read

Why we spent 4 hours discussing a button color

Issue #031: Parkinson's Law of Triviality (Bikeshedding)

Harsh Kathiriya

Failure Friday

Why deleted data reappeared on my server.

Jan 30, 2026

•

5 min read

Why deleted data reappeared on my server.

Issue #030: The "Clock Drift" disaster and Vector Clocks.

Harsh Kathiriya

Articles

Data Engineering

Feb 5, 2026

•

3 min read

Stop cleaning data before you save it.

Issue #036: Why ETL is dying and ELT is taking over.

Harsh Kathiriya

Data Engineering

Feb 3, 2026

•

4 min read

Why you shouldn't use Postgres for analytics

Issue #034: The physics of Data Storage (Row vs. Column)

Harsh Kathiriya

Data Engineering

Feb 2, 2026

•

4 min read

How to extract data without crashing production

Issue #033: Batch vs. Streaming (DE 101 Part 1)

Harsh Kathiriya

Data Engineering

Feb 1, 2026

•

3 min read

Stop learning tools. Start learning systems.

Issue #032: The 5 Pillars of Data Engineering (DE 101 Series). The Roadmap to Learning Data Architecture

Harsh Kathiriya

Career & Mindset

Jan 31, 2026

•

4 min read

Why we spent 4 hours discussing a button color

Issue #031: Parkinson's Law of Triviality (Bikeshedding)

Harsh Kathiriya

Failure Friday

Jan 30, 2026

•

5 min read

Why deleted data reappeared on my server.

Issue #030: The "Clock Drift" disaster and Vector Clocks.

Harsh Kathiriya

Query & ContextDaily engineering deep-dives at the intersection of Big Data and AI.

Featured

Stop cleaning data before you save it.

Why you shouldn't use Postgres for analytics

How to extract data without crashing production

Stop learning tools. Start learning systems.

Why we spent 4 hours discussing a button color

Why deleted data reappeared on my server.

Articles

Stop cleaning data before you save it.

Why you shouldn't use Postgres for analytics

How to extract data without crashing production

Stop learning tools. Start learning systems.

Why we spent 4 hours discussing a button color

Why deleted data reappeared on my server.

Query & Context

Query & Context

Daily engineering deep-dives at the intersection of Big Data and AI.