A startup runs every storage job through one Postgres: app writes, analyst SQL scans, and a Looker d

A medium Pipeline Design interview practice problem on DataDriven. Write and execute real pipeline design code with instant grading.

Domain

Pipeline Design

Difficulty

medium

Problem

A startup runs every storage job through one Postgres: app writes, analyst SQL scans, and a Looker dashboard all hit the same database. Analytical queries hold locks that block production transactions and full-table scans evict hot pages from the buffer cache. Apply the section's three-foundational-shapes framing and split the workload so each access pattern lands on the right shape; Postgres stays for the app.

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