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#
Title
Category
Difficulty
Acceptance
Problems
20 problems
#
Title
Category
Difficulty
Acceptance
1
The Social Network
Data Structures & Algorithms
Easy
0.0%
2
Token Bucket Rate Limiter
Data Structures & Algorithms
Medium
0.0%
3
Inverted Index Search
Data Structures & Algorithms
Medium
0.0%
4
The GIL and CPU-Bound Threads
Concurrency
Easy
0.0%
5
Singleton Design Pattern
Low-Level Design
Easy
0.0%
6
Thread-Safe Singleton
Concurrency
Medium
0.0%
7
asyncio and I/O-Bound Concurrency
Concurrency
Medium
0.0%
8
Container CPU Usage
DevOps
Medium
0.0%
9
Redis List
Data Structures & Algorithms
Medium
0.0%
10
Kafka Partition Assignment
Distributed Systems
Medium
0.0%
11
Multithreaded FizzBuzz
Concurrency
Medium
0.0%
12
Constructor Dependency Injection
Low-Level Design
Medium
0.0%
13
Circuit Breaker
Resilience
Medium
0.0%
14
Consistent Hash Ring
Data Structures & Algorithms
Hard
0.0%
15
Thread-Safe Blocking Queue
Concurrency
Medium
0.0%
16
Production LRU Cache
Data Structures & Algorithms
Medium
0.0%
17
Idempotency Keys
Resilience
Medium
0.0%
18
Request Coalescing
Concurrency
Hard
0.0%
19
Cursor Pagination
Low-Level Design
Medium
0.0%
20
Retry with Backoff and Jitter
Resilience
Medium
0.0%