BrainTrust Investment Lab › Band 4 — Managing the ETL Environment
Band 4 — Managing the ETL Environment · book p.492 · grain: one station per walk sheet
Speed by doing more at once, never by checking less. Loads parallelize to fill the hardware, and every shortcut that would trade correctness for throughput is refused by design.
No walk sheets yet — this station begins when the ladder reaches it. Nothing is walked ahead of the lowest incomplete rung.
The contract — what each step must produce
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