Coding·60 minMembers

Transactional KV Store

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Implement an in-memory key-value store with `get`, `set`, `delete`, and nested `begin` / `commit` / `rollback`. Required to support O(1) amortized operations and a multi-threading follow-up. A senior-...

SWE

data-structure

hashmap

transactions

concurrency

in-memory-database

hard

Frequency

Low

Last asked

2026-02-26

Stage

phone-screen · onsite-coding · onsite-system-design

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