---
id: jvm-ls-2019
title: Fast typechecking for Ruby
sidebar_label: JVM Language Summit 2019
---

**Date**: July 31, 2019\
**Speaker**: Dmitry Petrashko

- [→ Video](https://www.youtube.com/watch?v=Gdx6by6tcvw)
- [→ Slides](https://sorbet.run/talks/JVMLS2019/#/)

## Abstract

We have developed a typesystem for Ruby at Stripe with a goal of increasing developer productivity.

Stripe has a multi-million line codebase that will continue growing in increasing pace and we want our typechecker to provide good user experience.

This talk will cover tools and tricks that Sorbet uses to be fast.

The talk does not require any previous knowledge of Ruby and isn't Ruby specific at all.
