How many pub-sub interview questions are there?

2 reported questions, mostly System Design for ML.

How hard are pub-sub questions?

They average 4.0 out of 5: 2 at 4/5.

pub-sub Interview Questions

2 interview questions in our bank cover pub-sub, most of them System Design for ML. They average 4.0/5 difficulty — hard — and each one was reported by a candidate after a real interview. Companies known to ask about pub-sub: Meta, Roblox.

Practice these on the problems board →

Companies that ask about pub-sub

Meta1 Roblox1

Question mix

System Design for ML2

Difficulty

4/5 — hard2

Questions tagged pub-sub

Design an Online Auction System with Concurrent Bidding
4/5
Design a high-throughput, real-time bidding architecture in this classic Meta system design interview question modeled after major online auction platforms. You will address complex distributed systems challenges including concurrent bid ingestion, low-latency price broadcast mechanisms, anti-snipe deadline extensions, and definitive auction close-out semantics. The discussion highlights your capability to defend concurrency control strategies, estimate capacity requirements, and maintain consistency under heavy load. Read the complete architectural deep-dive and expert design solution by subscribing to the platform.
System Design for MLMeta
Design a ROS-like Pub/Sub System
4/5
Engage with a distributed systems architecture challenge frequently discussed in infrastructure interviews at Roblox, focusing on publish-subscribe communication frameworks. Candidates must architect a message-passing pipeline that addresses service discovery, network transport layers, and delivery guarantees like at-least-once or exactly-once semantics. The discussion also requires handling backpressure mechanisms and system scalability under heavy messaging loads. Access to the complete architectural breakdown and expert reference designs requires a paid subscription.
System Design for MLRoblox

Studied alongside

distributed-systems2

pub-sub interview FAQ

How many pub-sub interview questions are there?: 2 reported questions, mostly System Design for ML.
Which companies ask pub-sub questions?: Meta (1), Roblox (1).
How hard are pub-sub questions?: They average 4.0 out of 5: 2 at 4/5.