Save the date! P99 CONF 2026 — October 21-22. Call for speakers is open!

SESSION ON-DEMAND

All Things P99

The event for developers who care about P99 percentiles and high-performance, low-latency applications

Keeping Latency Low for User-Defined Functions with WebAssembly

Piotr Sarna describes how to integrate WebAssembly and Wasmtime into a C++ project in a latency-friendly manner by implementing UDFs and UDAs in async Rust.

18 minutes

Piotr Sarna, Founding Engineer at poolside

* Founding Engineer @poolside, hacking fun AI things at scale * Ex-maintainer of ScyllaDB and Seastar * Ex-Staff @Turso * Maintainer of libSQL * Wrote a few patches for the Linux kernel