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For starters, WebAssembly provides fine-grained runtime isolation for individual functions . A microservice could have multiple functions and support services running inside a microVM. WebAssembly can make the microservice more secure and more stable.

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created an idea from a article:

MEDIUM

WebAssembly Serverless Functions in Netlify

medium.com

MORE IDEAS FROM THE SAME ARTICLE

Finally, the WasmEdge Tensorflow API provides the most ergonomic way to execute Tensorflow models in the Rust programming language. WasmEdge installs the correct combination of Tensorflow dependency libraries, and...

Ui On The CDN

A Jamstack application consists of a static UI (in HTML and JavaScript) and a set of serverless functions to support dynamic UI elements via JavaScript. There are many benefits to the Jamstack approach. But perhaps one of the most significant benefits is performance. Since the UI is no longer gen...

Example 1: Image processing

Our first demo application allows users to upload an image and then invoke a serverless function to turn it into black and white. A live demo deployed on Netlify is available.

What’s next

Running WasmEdge from Netlify’s current serverless container is an easy way to add high-performance functions to Netlify applications. Going forward an even better approach is to use WasmEdge as the container itself. There will be no Docker and no Node.JS to bootstrap WasmEdge. This way, we can r...

Example 2: AI inference

The second demo application allows users to upload an image and then invoke a serverless function to classify the main subject on the image.

Where Does Webassembly Fit In

However, the edge CDN only solves the problem of distributing the static UI files. The backend serverless functions could still be slow. In fact, popular serverless platforms have well-known performance issues, such as slow cold start, especially for interactive applications. That’s where WebAsse...

Third, WebAssembly apps are easy to deploy and manage. They have much less platform dependencies and complexities compared with NaCl dynamic libraries and executables.

Second, the WebAssembly bytecode is portable . Developers only need to build it once and do not need to worry about changes or updates to the underlying Netlify serverless runtime. It also allows developers to reuse the same WebAssembly functions in other cloud environments.

Why WebAssembly in Netlify Functions?

High-performance functions written in C/C++, Rust, Swift, and other languages can be easily compiled into WebAssembly. Those WebAssembly functions are much faster than JavaScript or Python commonly used in serverless functions.