Design a Unique ID Generator · System Design Interview

Design a Unique ID GeneratorDesign the mechanism every other service in the company uses to get an identifier for a new row, event or message.What it has to do

Every identifier handed out is unique across the whole fleet

Identifiers handed out later sort after ones handed out earlier

An identifier fits in 64 bits

Scale

Identifiers per second at peak: 1 million

Machines asking for them: 10,000

Out of scope

Readable or vanity identifiers

Making them impossible to guess

Storing the objects they belong to

Practise this challengeAll system design challenges

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