Loading the challenge…

While this loads — quick one

Every subscriber must get each event. A queue, or pub/sub?

Message queueorPub/Sub

A queue hands each message to exactly one consumer — that is how work is shared out. Pub/sub copies every message to every subscriber.

Loading…

While this loads — quick one

Every subscriber must get each event. A queue, or pub/sub?

Message queueorPub/Sub

A queue hands each message to exactly one consumer — that is how work is shared out. Pub/sub copies every message to every subscriber.

Loading the challenge…

While this loads — quick one

Every subscriber must get each event. A queue, or pub/sub?

Message queueorPub/Sub

A queue hands each message to exactly one consumer — that is how work is shared out. Pub/sub copies every message to every subscriber.

URL Shortener (TinyURL) — system design interview practice — PlayCloudLabs

System designfoundational

URL Shortener (TinyURL)

A team is building a link shortener. A user pastes a long URL and gets back a short link; anyone who opens the short link is redirected to the original address. Every short link must carry a code that is unique across the whole system, and the service will hand out billions of them over time. The mappings from code to URL are tiny, never change once written, and are looked up far more often than they are created — a popular link can be opened thousands of times a second. Redirects have to feel instant even under that read load, while creating a link can be a little slower.

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