locks Interview Questions
2 interview questions in our bank cover locks, most of them Coding & Leetcode-style Questions. They average 3.5/5 difficulty — hard — and each one was reported by a candidate after a real interview. Companies known to ask about locks: Netflix, WeRide.
Practice these on the problems board →Companies that ask about locks
Question mix
- Coding & Leetcode-style Questions2
Difficulty
- 3/5 — medium1
- 4/5 — hard1
Questions tagged locks
Thread-Safe KV Store, Atomic Counter, Blocking Queue
4/5This practical concurrency puzzle, reported during software engineering interviews at Netflix, requires building robust synchronization primitives in Python, specifically an atomic counter supporting compare-and-swap semantics and a bounded blocking queue. It tests your mastery of multi-threading mechanics, thread safety, locks, and condition variables under high-contention scenarios. To view the full problem description and production-ready code solution, unlock your subscription today.
Coding & Leetcode-style QuestionsNetflixMulti-threaded Increment with Thread Safety
3/5Concurrency control and thread safety are critical competencies for systems engineers, frequently evaluated in practical coding rounds at companies like WeRide. This problem challenges you to design a multi-threaded program that prevents race conditions and value overwrites during concurrent counter increments, ensuring exact final outcomes under heavy contention. It tests your mastery of synchronization primitives, locks, and thread management. To explore the complete problem details, concurrency pitfalls, and robust solution, a paid subscription is required.
Coding & Leetcode-style QuestionsWeRide
Studied alongside
locks interview FAQ
- How many locks interview questions are there?
- 2 reported questions, mostly Coding & Leetcode-style Questions.
- Which companies ask locks questions?
- Netflix (1), WeRide (1).
- How hard are locks questions?
- They average 3.5 out of 5: 1 at 3/5, 1 at 4/5.