Rainer Stropek

Wasm Deep Dive - A Glance Behind the Scenes

How does WebAssembly guarantee security without OS-level virtualization? This talk demystifies its stack-based VM and isolated linear memory.

Wasm Deep Dive - A Glance Behind the Scenes
#1about 6 minutes

Defining WebAssembly as a portable compilation target

WebAssembly is a binary instruction format for a stack-based virtual machine that allows code from languages like Rust and C++ to run in the browser and on the server.

#2about 11 minutes

Building and running a simple Wasm module

A simple function is written in WebAssembly Text (WAT), compiled to a binary Wasm file using wat2wasm, and then executed from a JavaScript host.

#3about 14 minutes

A deep dive into the stack-based virtual machine

An Advent of Code example demonstrates how all operations, from memory loads to arithmetic and comparisons, use the stack to pass arguments and receive results.

#4about 11 minutes

Wasm's sandboxed memory and host communication model

WebAssembly modules operate on a dedicated linear memory block for security, and they communicate with the host environment through defined imports and exports.

#5about 6 minutes

Extending Wasm capabilities with WASI and WASIX

The WebAssembly System Interface (WASI) provides a standard API for modules to access system resources like file I/O and networking, which are not available in core Wasm.

#6about 10 minutes

Answering common questions about WebAssembly

The Q&A covers practical topics including when to use Wasm over JavaScript, the WebAssembly Component Model (WIT), and approaches to debugging and profiling.

Related jobs
Jobs that call for the skills explored in this talk.

Matching moments

Running WebAssembly on the server with WASI
22:10 MIN

Running WebAssembly on the server with WASI

WebAssembly Revolution: Elevating JavaScript's Reach and Performance

Demonstrating Wasm with Rust and the WASI interface
09:03 MIN

Demonstrating Wasm with Rust and the WASI interface

WebAssembly: The Next Frontier of Cloud Computing

Taking WebAssembly beyond the browser with WASI
08:32 MIN

Taking WebAssembly beyond the browser with WASI

Using WebAssembly to run, extend, and secure your application

How WebAssembly works as a universal compilation target
02:22 MIN

How WebAssembly works as a universal compilation target

WebAssembly Revolution: Elevating JavaScript's Reach and Performance

The core components of the WebAssembly ecosystem
06:23 MIN

The core components of the WebAssembly ecosystem

WebAssembly: The Next Frontier of Cloud Computing

Understanding the core components of WebAssembly
09:36 MIN

Understanding the core components of WebAssembly

WebAssembly: The Next Frontier of Cloud Computing

Navigating the WebAssembly ecosystem and foundations
36:03 MIN

Navigating the WebAssembly ecosystem and foundations

WebAssembly: The Next Frontier of Cloud Computing

Solving common developer challenges with WebAssembly
00:05 MIN

Solving common developer challenges with WebAssembly

WebAssembly Revolution: Elevating JavaScript's Reach and Performance

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From learning to earning

Jobs that call for the skills explored in this talk.

Rust and GoLang

Rust and GoLang

NHe4a GmbH
Karlsruhe, Germany

Remote
€55-65K
Intermediate
Senior
Go
Rust