📅 Today’s Picks
Delta Lake: Time Travel Your Data Pipeline
Problem
Once data is overwritten in pandas, previous versions are lost forever.
You can’t debug pipeline issues or rollback bad changes when your data history disappears.
Solution
Delta Lake maintains version history allowing you to query any previous state of your data by timestamp or version number.
Use cases:
- Compare today’s sales data with yesterday’s to spot revenue anomalies
- Recover accidentally deleted customer records from last week’s backup
- Audit financial reports using data exactly as it existed at quarter-end
☕️ Weekly Finds
DALEX [ML] – Model Agnostic Language for Exploration and eXplanation – helps explore and explain behavior of complex machine learning models
OpenBB [Data Processing] – Investment Research for Everyone, Anywhere – free and open-source financial platform with analytics tools
fastlite [Python Utils] – A bit of extra usability for sqlite – quality-of-life improvements for interactive use of sqlite-utils library
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