Fly.io dumped HashiCorp's Consul because it couldn't keep up with their massive, super-fast service discovery needs across 800+ nodes. Seriously, who needs a bottleneck?
Their brilliant solution is Corrosion, a new, eventually consistent state replication engine built with Rust and SQLite. It uses fancy CRDTs and the SWIM gossip protocol to sync machine state globally without a central leader, keeping things snappy and resilient.
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