counters Interview Questions
2 interview questions in our bank cover counters, most of them System Design for ML. They average 3.0/5 difficulty — medium — and each one was reported by a candidate after a real interview. Companies known to ask about counters: Roblox, Goldman Sachs.
Practice these on the problems board →Companies that ask about counters
Question mix
- System Design for ML1
- Coding & Leetcode-style Questions1
Difficulty
- 2/5 — easy1
- 4/5 — hard1
Questions tagged counters
Design a Like / Unlike Counter Service at Scale
4/5This system design challenge, reported from Roblox, asks you to architect a massive-scale like and unlike counter service supporting hundreds of millions of users. The evaluation centers on your ability to design database schemas, ensure idempotency during retries, mitigate hot-shard bottlenecks, and balance read versus write performance tradeoffs on high-traffic creator content. You will learn how to handle extreme data velocity efficiently. Access the detailed architectural guide and expert solution by purchasing a subscription.
System Design for MLRobloxSimulate Chairs Required for Customer Events
2/5Reported as a Goldman Sachs technical question, this problem requires you to track resource allocation and reuse based on a chronological stream of events. You will simulate seating availability where arrivals utilize open spots or trigger new inventory acquisitions, and departures replenish the available pool. This exercise tests your capability to manage state changes and maintain running totals efficiently through sequential character processing. The complete problem statement and verified code solution require a subscription.
Coding & Leetcode-style QuestionsGoldman Sachs
counters interview FAQ
- How many counters interview questions are there?
- 2 reported questions, mostly System Design for ML.
- Which companies ask counters questions?
- Roblox (1), Goldman Sachs (1).
- How hard are counters questions?
- They average 3.0 out of 5: 1 at 2/5, 1 at 4/5.