Rust for Node.js Developers Giovanny Gongora / @gioyik 

OUTLINE • What is Rust? • Why using Rust with Node.js • Rust inside Node.js • FFI on Node.js • Let’s do it • More ways? 

WHAT IS RUST? 1. A systems programming language 2. It focuses on speed, safety and concurrency 3. Great fit to write programs with specific time requirements 4. Ability to write low level code, like device drivers 5. No garbage collector 

What does it look like? You can run this on https://play.rust-lang.org if you don’t have Rust installed 

WHY SHOULD I CARE? 

WHY USING RUST WITH NODE.JS 1. Performance 2. Parallelism 3. Bindings 

ANY REAL ADVANTAGE WE COULD SEE? Yes, but not today 

RUST INSIDE NODE.JS (really?) 

THE PROBLEM “Start ten threads. Inside each thread, count from one to five million. After all then threads are finished, print out ‘done!’” 

Let’s create a new cargo project configure Cargo.toml 

Edit the lib Build it 

Create your node file Check the output 

LET’S TRY A LESS COMPLEX EXAMPLE! 

Let’s create a new cargo project configure Cargo.toml 

Edit the lib Build it 

Create your node file profit! 

MORE WAYS? 

LET’S TRY A COMPLEX EXAMPLE! 

NEON Neon is a Rust bridge to the Node.js platform: an API (and a set of tools) for implementing binary Node modules in Rust 

RUNO [PROTOTYPE] RuNo bridge is a command line tool which generates C++ boilerplate add-on code to call Rust library from. 

CONCLUSIONS 

SHOULD I TRY RUST? 

SO, USE RUST INSTEAD OF JAVASCRIPT ON WEB APPLICATIONS? 

THANKS! More info at Rust Inside Other Languages Giovanny Gongora / @gioyik