Polymarket Tests New Trading System With 10x Capacity Ahead of December Launch
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Polymarket has opened sandbox testing for Nex. This is its new trading system rewritten in Rust, designed to achieve an operational capacity ten times higher than the current infrastructure of its centralized order book (CLOB). Its engineering team announced that the execution engine aims to process 100,000 commands per second sustainably, with peak capacity of up to 150,000 orders and internal latencies reduced to milliseconds ahead of a conditional launch scheduled for mid-December.
At the end of August, I said our Polymarket DeFi CLOB couldn't be saved, and we were rewriting it from scratch in Rust 🦀
Today I'm excited to announce Nex, our new exchange built from the ground up.
We've been sprinting on it since August. A Nex instance has been running in… https://t.co/QxqtKA5LXg pic.twitter.com/uMPXmOYRv2
— Josh (@devjoshstevens) November 13, 2026
This update represents a critical evolution for the decentralized prediction market. During internal testing, the 99th percentile order placement time dropped drastically, eliminating race condition issues and inconsistencies experienced in the previous architecture. The system has successfully passed mirror mode and shadow testing phases, ensuring a smooth transition and backward compatibility for developers and trading bots connected to the platform.
Looking ahead, Nex’s optimization seeks to consolidate the stability and scalability needed to support massive transaction volumes amid the growing global adoption of forecast contracts. As a next step, the platform will complete four weeks of validation in a sandboxed environment before its final deployment in production in mid-December.
Source: https://x.com/devjoshstevens/status/2121241806469796103
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