How does WebAssembly guarantee security without OS-level virtualization? This talk demystifies its stack-based VM and isolated linear memory.
#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.
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Matching moments
03:05 MIN
Running WebAssembly on the server with WASI
WebAssembly Revolution: Elevating JavaScript's Reach and Performance
05:04 MIN
Demonstrating Wasm with Rust and the WASI interface
WebAssembly: The Next Frontier of Cloud Computing
03:13 MIN
Taking WebAssembly beyond the browser with WASI
Using WebAssembly to run, extend, and secure your application
05:42 MIN
How WebAssembly works as a universal compilation target
WebAssembly Revolution: Elevating JavaScript's Reach and Performance
02:40 MIN
The core components of the WebAssembly ecosystem
WebAssembly: The Next Frontier of Cloud Computing
04:05 MIN
Understanding the core components of WebAssembly
WebAssembly: The Next Frontier of Cloud Computing
05:41 MIN
Navigating the WebAssembly ecosystem and foundations
WebAssembly: The Next Frontier of Cloud Computing
02:17 MIN
Solving common developer challenges with WebAssembly
WebAssembly Revolution: Elevating JavaScript's Reach and Performance
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