Presto C++ Engine in 2026: State of the Art, Production Experience & Future Roadmap - Prestissimo is a full C++ rewrite of the Presto worker, serving as a drop-in replacement for the Java worker and powered by Velox — Meta’s unified execution library. By eliminating JVM overhead and GC pauses, Prestissimo delivers SIMD-accelerated vectorized execution, smart I/O prefetching, and fine-grained memory arbitration. Benchmarks on TPC-DS at scale demonstrate up to 5× faster query execution over the Java worker.

This talk covers the current production state of Prestissimo at Meta, IBM watsonx.data, and Uber — including the correctness verification strategy, the native-plan-checker router for transparent workload migration, and the Arrow Flight Federation Connector for bridging remaining SQL coverage gaps.

We’ll close with the 2026 roadmap: Iceberg, Delta Lake and Hudi support, GPU acceleration, vector search, and resource group improvements — and how you can get involved in the growing open-source community.