Clock Skew and Causality Violations: Why Distributed Clocks Lie
May 3 · 19 min read · TLDR: Physical clocks on distributed machines cannot be perfectly synchronized. NTP keeps them within tens to hundreds of milliseconds in normal conditions — but under load, across datacenters, or aft
Join discussion
Logical clocks - Lamport Clocks and Vector Clocks
Jul 21, 2022 · 3 min read · Why do we need logical clocks? The concept of time is fundamental to our way of thinking about ordering of events in a system. Since physical clocks in a distributed system can drift among each other, it will be very difficult to enforce total orderi...
Join discussion
