A Year with Prestissimo: How Meta Leveraged Velox for Presto Vectorization

Prestissimo is an ambitious project that rewrites the Java‑based Presto worker in C++ by leveraging the open‑source execution engine Velox. The presentation first outlines Velox’s architecture and its components, then describes the high‑level design of integrating Velox into Presto (Prestissimo).

After more than a year of production deployment at Meta, the authors share observations gathered from experimental platform workloads, including performance benefits and practical lessons. The material is intended for teams looking to raise Presto performance or to consider “veloxification” of their own query engines.