Merge Hundreds of Paginated Sorted Sources into One Deduplicated Record Stream
Company: Airwallex
Role: Software Engineer
Category: Software Engineering Fundamentals
Difficulty: medium
Interview Round: Technical Screen
Overview: Coding question that asks you to merge records from hundreds of offset/limit paginated sources into one globally sorted, deduplicated stream written one record at a time. It tests k-way merging with a heap, per-source page buffering, detecting source exhaustion, bounded-memory deduplication, and failure handling.
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