P99 order latency drops to 3.76 milliseconds, Polymarket's new trading system Nex opens sandbox testing

Odaily reports that Josh stated that the new trading system Nex, rewritten in Rust, has opened sandbox testing. Over the past week, it has mirrored production orders in shadow mode to verify latency, load stability, and matching accuracy, and it has not yet officially launched. Internal test data shows that P99 order latency has dropped from 1.55 seconds in the existing central limit order book (CLOB) to 3.76 milliseconds, but this metric is not end-to-end latency; the team plans to conduct 4 weeks of shadow testing, and if it runs well, it is expected to launch in mid-December, with WebSocket improvements potentially rolled out earlier.