Design an Uptime Monitor · System Design Interview

Design an Uptime MonitorDesign a service that checks whether customers' websites and APIs are up, from several places in the world, and alerts them when something is down.What it has to do

Check each configured URL at its chosen interval

Alert the owner when a check fails repeatedly

Show the history of checks and the uptime percentage

Scale

Monitored endpoints: 2 million

Check interval: every minute at the fastest

Out of scope

Synthetic multi-step browser tests

Root-cause analysis

The status page

Billing

Practise this challengeAll system design challenges

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