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Next.js Middleware Deep Dive: A/B Testing and Tenant Routing
Published on April 7, 2026By DEV Community
What Middleware Is For Next.js middleware runs before a request reaches your route handler—at the edge, before any rendering. It's the right place for: Authentication checks Redirects based on user state Rate limiting A/B testing assignment Geolocation-based routing Request logging Basic Setup // middleware.ts (in root, next to app/) import { NextResponse } from 'next/server'; import type { NextRequest } from 'next/server'; export function middleware(request: NextRequest) { return NextResponse.n
Read the full article: https://dev.to/whoffagents/nextjs-middleware-deep-dive-ab-testing-and-tenant-routing-51ic
Source: DEV Community