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Spark Under the Hood
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Why Your 5-Second BigQuery Query Isn’t Cheap
BigQuery doesn’t charge for results. It charges for the work you didn’t realize it was doing.
Feb 10
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luminousmen
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Spark Caching Explained: What Really Happens Under the Hood
You called .cache(). Spark said "maybe". Let’s talk about what actually happens
Feb 3
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luminousmen
8
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[Uncompiled] Finished “If Anyone Builds It, Everyone Dies”
Better read with this music: Flight of the Conchords
Jan 6
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luminousmen
Deep Dive into Spark Memory Management
The real reason your Spark cluster is burning money
Dec 23, 2025
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luminousmen
42
6
[Uncompiled] Praise Your Data Team
“You can catch more flies with honey than with vinegar”
Dec 9, 2025
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luminousmen
BigQuery Explained: What Really Happens When You Hit “Run”
What if we removed all the crap and just left SQL and hardware?
Dec 2, 2025
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luminousmen
11
2
What Do You Think?
The 4 Most Underrated Words in Leadership
Nov 25, 2025
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luminousmen
5
1
Data Warehouse, Data Lake, Data Lakehouse, Data Mesh: What They Are and How They Differ
Collecting All the Pokemons
Nov 11, 2025
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luminousmen
53
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Blog | luminousmen
helping robots conquer the earth and trying not to increase entropy using Python, Data Engineering, Machine Learning
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