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Pytest pt3 - Writing Cleaner Tests with Parametrization and Temporary Files

Pytest pt3 - Writing Cleaner Tests with Parametrization and Temporary Files

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4 min read
The Day I Realized "It Ran Successfully" Means Nothing in Databricks Production

The Day I Realized "It Ran Successfully" Means Nothing in Databricks Production

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6 min read
Building a Production Data Pipeline with Incremental Loading and dbt

Building a Production Data Pipeline with Incremental Loading and dbt

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3 min read
Cloud Bills Took a Decade to Get FinOps. AI Bills Won't Get That Long.

Cloud Bills Took a Decade to Get FinOps. AI Bills Won't Get That Long.

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4 min read
Python batch를 Spark로 옮겼더니 802.675가 달라졌다

Python batch를 Spark로 옮겼더니 802.675가 달라졌다

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3 min read
A CSV quality report should not echo the data it rejects

A CSV quality report should not echo the data it rejects

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2 min read
Deterministic Data Engineering With AI Harnesses: Using Claude Code, Codex, Antigravity, and OpenCode for Data Work You Can Actually Trust

Deterministic Data Engineering With AI Harnesses: Using Claude Code, Codex, Antigravity, and OpenCode for Data Work You Can Actually Trust

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19 min read
Architecting lean LLM caching: how to drop a 20M-row table without losing your AI memory

Architecting lean LLM caching: how to drop a 20M-row table without losing your AI memory

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4 min read
Why Fraud Rings Are a Graph Problem (And Your SQL Database Can't See Them)

Why Fraud Rings Are a Graph Problem (And Your SQL Database Can't See Them)

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4 min read
Model an Evidence Chain, Not a Bag of Citations

Model an Evidence Chain, Not a Bag of Citations

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5 min read
Why AI Projects Fail Even with Great Models

Why AI Projects Fail Even with Great Models

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3 min read
Engineering a Defensible Suspect-Condition Pipeline (Identify Validate Capture)

Engineering a Defensible Suspect-Condition Pipeline (Identify Validate Capture)

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2 min read
World Cup Data Pipeline

World Cup Data Pipeline

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5 min read
Real-Time vs Batch: Which Insurance Data Actually Needs to Be Live

Real-Time vs Batch: Which Insurance Data Actually Needs to Be Live

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3 min read
Why Your Insurance Chatbot Failed (And What AI Agents Do Differently)

Why Your Insurance Chatbot Failed (And What AI Agents Do Differently)

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4 min read
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