Available question text
Design a Social Network class that tracks follower relationships between users. Implement the following operations: follow(userA, userB), unfollow(userA, userB), snapshot() which captures the current state and returns a snapshot ID, isFollow(userA, userB, snapshotId) to query whether a follow relationship existed at a given snapshot, getFollowees(userId, snapshotId) to retrieve users that a given user followed at a snapshot, and getUsersFollowed(userId, snapshotId) to retrieve users who followed a given user at a snapshot.
Related questions
Continue with questions that share topics or the same question type.
- Design a Versioned Social Follow Graph with Friend Recommendations
Coding
- Implement follow graph with snapshots
Coding · Data Structure Design
- Implement Follow Graph with Snapshots and Recommendations
Coding · Data Structure Design · Graphs
- Implement Social Follow Recommendations
Coding
Sources · 1 reference
These records explain where the question appears. A company tag or candidate report does not guarantee a future interview question.
Hello Interview · 1 record
OpenAI
Design a Social Network Class with Follow Relationships and Versioned Snapshots
Reported Jul 1, 2026 · 3 source reports
STAFF
Source snapshot: Nov 12, 2026
View source