Polymarket's New Nex Matching Engine to Launch Mid-December, Reduces Order Latency by 412x

According to Foresight News, Polymarket's new matching engine Nex, rewritten in Rust, is set to launch in mid-December after running in shadow mode for one week. Internal testing shows p99 order latency dropped from 1.55 seconds to 3.76 milliseconds, while cancellation latency fell from 627.92 milliseconds to 3.20 milliseconds. Processing capacity improved dramatically: the current CLOB handles 10,000 instructions per second, while Nex reaches 100,000 instructions per second with peak throughput of 150,000. Nex will continue running in shadow mode for four weeks before mainnet launch, with WebSocket improvements potentially rolling out earlier. The engine uses deterministic design to eliminate race conditions while maintaining compatibility with market makers and developers.
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