Performance first 

History behind Node.js 

What's Node.js for • Node is designed to build scalable network applications • Node is similar in design to, and influenced by, systems like Ruby's Event Machine or Python's Twisted • Just because Node is designed without threads, doesn't mean you cannot take advantage of multiple cores in your environment. 

History behind Rust 

Why Rust exists? • There is too little attention paid to safety • They have poor concurrency support • There is a lack of practical affordances • They offer limited control over resources 

How fast is Rust • Fast! Rust is already competitive with idiomatic C and C++ in a number of benchmarks • Rust takes zero-cost abstractions as one of its core principles: none of Rust’s abstractions impose a global performance penalty, nor is there overhead from any runtime system in the traditional sense. 

Goals for Rust • Design and Implement a safe, concurrent, practical systems language • Provides both efficient code and a comfortable level of abstraction 

Non Goals for Rust • We do not demand that Rust run on “every possible platform”. It must eventually work without unnecessary compromises on widely-used hardware and software platforms. • We do not intend to cover the complete feature-set of C++, or any other language. Rust should provide majority-case features. • We do not intend to be 100% static, 100% safe, 100% reflective, or too dogmatic in any other sense. Trade-offs exist. 

Workshop time 

Hello world en Node.js Step 1 

Hello world en Rust Step 2 

FFI ( Node.js + Rust ) Step 3 & 4 

Neon ( Node.js + Rust ) Step 5 & 6 

Neon ( Node.js + Rust ) Complex example - Step 7 

So, what just happened? 

Advantages - Rust & Node.js • The performance increase is not the only advantage, the consolidation of processes simplifies the deployment strategy, troubleshooting and maintenance. 

Disadvantages - Rust & Node.js • Get a negligible gain in exchange for an implementation that doesn't scale • Sometimes writing a native module in Rust might not be easier, but would be the best answer for performance problems 

Thanks Giovanny Gongora - @Gioyik