Fly.io ditched HashiCorp's Consul because it couldn't keep up with their massive global network. So, they cooked up "Corrosion," a snazzy new state replication engine built with Rust and SQLite.
This clever system uses CRDTs and a gossip protocol (like rumors spreading!) to keep everything in sync across hundreds of nodes, all without needing a grumpy central leader. It's a real deep dive into making global distributed systems tick, perfect for anyone wrestling with serious tech scaling challenges.
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