Machine Coding Sheet
Twitter Machine Coding Interview
Top low-level design (LLD) and machine coding questions frequently asked in Twitter interviews. Master these to clear the LLD round.
Overall progress
0/104 solved
0%
easy0/18
medium0/45
hard0/41
0/104
Solved
Infrastructure
0/3 solved
| Status | Star | Problem | Difficulty | Key Focus | Notes |
|---|---|---|---|---|---|
Distributed ID Generator Asked by:TwitterMetaMicrosoft+1 more | Medium | Snowflake Strategy, Clock Providers, Resilient Clock-Skew Backoffs, Thread-Safe Bitwise Math | |||
In-Memory Cache (LRU/LFU) Asked by:RedisLabsAmazonTwitter+1 more | Medium | Strategy Pattern, Generics, Concurrent Read-Write Locks, Eviction Mechanics | |||
Like Count System (Sharded) Asked by:TwitterMetaByteDance | Medium | Atomic Longs, Sharding |
Real-time
0/1 solved
| Status | Star | Problem | Difficulty | Key Focus | Notes |
|---|---|---|---|---|---|
Live Reactions System Asked by:MetaByteDanceTwitter+1 more | Hard | Aggregator, High Write Load |
Social
0/4 solved
| Status | Star | Problem | Difficulty | Key Focus | Notes |
|---|---|---|---|---|---|
Follower / Following System Asked by:MetaTwitterLinkedIn+1 more | Easy | Asymmetric Relation Modeling | |||
Mentions & Tagging System Asked by:MetaTwitterSlack+1 more | Easy | String Parsing, Notifications | |||
News Feed Ranker Asked by:MetaByteDanceTwitter+1 more | Medium | Scoring Algorithms | |||
LinkedIn (Social Graph) Asked by:LinkedInMetaTwitter | Hard | Bidirectional BFS, Strategy Pattern, Observer Pattern, Graph Traversals, Concurrent Graph Nodes |