https://www.rik-kisnah.ai/tags/replication/Recent content in Replication on Rik Kisnah - BlogHugoenTue, 10 Sep 2024 09:00:00 -0700https://www.rik-kisnah.ai/teach/systems/design-a-multi-region-service/Tue, 10 Sep 2024 09:00:00 -0700https://www.rik-kisnah.ai/teach/systems/design-a-multi-region-service/Run the same service in three regions, all taking writes, and survive one region vanishing. The compute part is easy. The data part forces a choice you cannot dodge: who wins when two regions write the same row at the same moment.https://www.rik-kisnah.ai/teach/systems/design-a-key-value-store/Tue, 07 Feb 2017 09:00:00 -0800https://www.rik-kisnah.ai/teach/systems/design-a-key-value-store/A giant dictionary spread across many machines. Put a value under a key, get it back later, even when machines die. Partition, replicate, and decide what ’later’ means when two copies disagree.