Polymarket's Rust-built NEX exchange: 200x faster orders, 10x capacity in shadow tests
SuhailKakar · x · 2026-11-13
Polymarket announced NEX, a from-scratch Rust rewrite of its exchange, now in sandbox. In late August the team concluded the old DeFi CLOB couldn't be saved; NEX has run in shadow mode on production traffic for the past week, mirroring every order to validate latency, stability, and matching correctness.
Key facts:
- Order placement processing over 200x faster (412x place, 196x cancel by internal timings)
- 10x capacity: 100k commands/s sustained, 150k/s bursts
- Drop-in CLOB API replacement with no breaking changes
- Sandbox runs on Polygon Amoy with test pUSD and bot-provided liquidity, books separate from production
- Best latency via AWS PrivateLink in London, same zone as NEX
- Targeting full release before end of 2026
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