Perplexity system design interview

Round 4 of 7 · 4 questions reported

See the whole loop
Length
60 min
Format
Design discussion
They grade
Distributed systems for search and AI serving: RAG, LLM serving limits, semantic caching, real-time crawling
Heads-up
Justify storage and architecture choices from access patterns.

Questions Perplexity asks in this round 4

About the Perplexity system design round

What does Perplexity ask in the system design round?

The most asked: Design durable execution for long-running agent queries, Design a top-K popular items system and Design Mint.com. 4 questions reported in all.

How long is the Perplexity system design round?

About 60 minutes.

What is the Perplexity system design round like?

Design discussion. They grade: Distributed systems for search and AI serving: RAG, LLM serving limits, semantic caching, real-time crawling.