Faasta is a cutting-edge Function-as-a-Service (FaaS) platform designed for exceptional speed and efficiency. With cold start times under 1ms and a memory overhead of less than 1KB, Faasta delivers unparalleled performance through its modern WebAssembly architecture.
- Runs your code as WebAssembly modules using the WASI P2 standard
- Leverages WASIHTTP for high-performance HTTP request handling
- Provides secure isolation between functions through WebAssembly’s sandboxed execution model
- Achieves ultra-fast cold starts without the overhead of traditional containerization
- Self-hostable with simple setup – run your own Faasta instance anywhere
- Standards-compliant with WASI P2 and WASIHTTP, making your functions portable
- Powered by Wasmtime for efficient WebAssembly execution
- Includes a free hosted instance at faasta.xyz
Install the Faasta CLI:
cargo install cargo-faasta
Create a new Faasta project:
cargo faasta init
# or
cargo faasta new my-function
Build your function for WebAssembly:
Login with your GitHub account:
Deploy your function:
Your function will be available at https://your-function-name.faasta.xyz
Faasta implements the WebAssembly System Interface (WASI) Preview 2 specification and the WASIHTTP standard to enable:
- Standardized HTTP request and response handling
- Component-based architecture for better modularity
- Consistent interface for interacting with the host system
- Portable functions that can run on any WASI P2 compatible runtime
Because Faasta uses these open standards, your functions are not locked to a specific platform and can be hosted anywhere that supports these standards.
Faasta is fully self-hostable. You can run your own instance of the Faasta server to host your functions on your own infrastructure.
Faasta is currently experimental. There will be breaking changes that will interupt service on the faasta.xyz instance.
