Leveraging WebAssembly in Cloudflare Workers at the Edge

Mon, 05 Jan 2026 00:00:00 +0900

Introduction

Cloudflare Workers revolutionized serverless computing by bringing code execution to the network edge — over 330 locations worldwide. By integrating WebAssembly (Wasm) modules into Workers, you can run computationally intensive tasks (image processing, cryptography, video encoding, scientific calculations) at near-native speeds while maintaining the low-latency benefits of edge distribution. This article explores how to compile languages like Rust and AssemblyScript to Wasm, deploy them on Workers, and the performance trade-offs involved.

Next.js Middleware: Routing, Auth, and Edge Computing

Tue, 18 Jun 2024 00:00:00 +0900

Introduction

Next.js Middleware executes before every request, running at the Edge or serverless region. A single middleware.ts file at the project root intercepts incoming requests and can redirect, rewrite, manipulate headers, or perform authentication checks before the request reaches the matched route.

Middleware is ideal for fast, edge-based decisions that should happen before page rendering. It does not run on static assets or _next/static by default.

Basic Structure

The middleware file exports a function that receives NextRequest and returns NextResponse, along with a config object that defines which paths trigger execution.

Edge on Commentary of Takao

Leveraging WebAssembly in Cloudflare Workers at the Edge

Introduction

Next.js Middleware: Routing, Auth, and Edge Computing

Introduction

Basic Structure