Introduction to WASI & Its Goals
Understand the WebAssembly System Interface (WASI) and its mission to standardize system-level access for WASM.
Unpacking WASI: WebAssembly System Interface
Welcome to the world of WASI! WASI stands for the WebAssembly System Interface. It's a key development that extends WebAssembly's capabilities beyond the web browser.
Think of WASI as a standardized collection of operating system-like APIs. These APIs allow WebAssembly modules to interact with the outside world in a consistent, secure way.
The WASM Sandbox: Isolation by Design
Before WASI, WebAssembly modules were designed to run in a highly isolated 'sandbox' environment. This means they couldn't directly access things like:
- The file system
- Network sockets
- Environment variables
- The system clock
This isolation is great for security on the web, but it severely limited WASM's use cases outside of browsers.
All lessons in this course
- Introduction to WASI & Its Goals
- Building & Running WASI Modules
- WASI Capabilities & Future
- Working with the WASI Filesystem