Two Systems, One Room Count

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

Domain

Pipeline Design

Difficulty

hard

Seniority

L6

Problem

We operate a hotel booking marketplace with two independently evolving inventory databases: one from a legacy on-prem system and one from a newer cloud platform. Both are continuously updated by hotel partners, but they use different schemas for the same logical entities. Design a system to synchronize both sources into a unified, consistent inventory view that the booking platform and analytics team can query.

Summary

Two booking systems. Rooms do not duplicate themselves.

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