Fly.io decided Consul just wasn't cutting it for their super-speedy global SQLite replication needs, so they cooked up their own magic: Corrosion! This Rust-powered engine lets them sync up data across a whopping 800+ nodes in under a second, leaving slow service discovery in the dust.
They've ditched central leaders, instead opting for super-smart CRDTs and the "SWIM gossip protocol" to spread state across their cluster like wildfire. It's a brilliant move for anyone looking to build lightning-fast, resilient distributed systems without the usual bottlenecks.
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