Time in distributed systems


Topic | v1 | created by janarez |
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In distributed systems, time is a problem. Each computer has a clock built in, but those clocks are independent. The clocks on different machines can vary quite a bit. If a human being is setting them, then they’re probably at best accurate to one second. Even using a protocol like NTP, which synchronizes clocks between different computers, you can only get the clocks accurate to within about a millisecond of each other. But for a lot of things that we want to do with a collection of computers, we need to know what event happened first.


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a parent of Hybrid logical clock

Hybrid logical clock, HLC, combines the best of logical clocks and physical clocks. HLC captures the...


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The notion of a time plays very important role in distributed systems. But, why do we worry so much a...

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