Design RPC System

System DesignSnowflakeLast reported May 2026Low Frequency
Reported
2× across candidate reports
First seen
April 2025
Last reported
May 2026
Reported outcome
unknown

Problem Overview

Design a Remote Procedure Call (RPC) system. In one variant, this means designing an abstraction layer that hides REST API boilerplate so that service callers can invoke remote services as if they were local function calls (e.g., exampleService.processSomething(data)) rather than manually constructing HTTP POST requests each time. The current approach…

  • 4 candidate-reported follow-ups — the exact probes interviewers asked, with the trigger for each
  • The rest of the problem statement — full requirements, constraints, and edge cases
  • Approach and trade-offs — what passing candidates did, and the mistakes that sink people
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Verified Source
Every question is reconstructed from multiple independent candidate reports. Verbatim follow-ups, not invented ones.
Codex Fact-Checked
Technical claims, formulas, and scale numbers are reviewed against primary sources.
Interviewer Follow-ups
The exact follow-ups reported by candidates, with the trigger that prompts each one — plus the mistakes that sink people.
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