Design a Distributed Key-Value Store · System Design Interview

Design a Distributed Key-Value StoreDesign a key-value store that other services use as their database, spread across many machines in several datacentres.What it has to do

Put and get a value by its key

A key survives the loss of a machine

Capacity grows by adding machines

Scale

Keys: 100 billion

Requests per second: 5 million

Out of scope

Secondary indexes

Transactions across keys

A query language

The client library’s API

Practise this challengeAll system design challenges

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