InfoQ: How Fly.io Replicates SQLite Globally in less than 1 Second

Fly.io ditched HashiCorp's Consul for global SQLite replication because it just couldn't scale. They cooked up their own distributed state engine, Corrosion, built with Rust and SQLite, to handle hundreds of nodes with sub-second latency, all without a central leader!

This slick system uses clever tech like CRDTs (Conflict-free Replicated Data Types) and the SWIM gossip protocol to keep everything globally synchronized and super-fast. It's a real masterclass in building resilient, leaderless distributed systems!

Watch on YouTube