Chaos Engineering

// middleware.ts - Add to introduce random failures
import { NextResponse } from 'next/server';

export function middleware(request) {
  if (process.env.ENABLE_CHAOS === 'true') {
    // 10% of requests fail
    if (Math.random() < 0.1) {
      return new NextResponse(
        JSON.stringify({ message: 'Chaos monkey error' }),
        { status: 500 }
      );
    }

    // 20% of requests are slow
    if (Math.random() < 0.2) {
      return new Promise(resolve => {
        setTimeout(() => resolve(NextResponse.next()), 2000);
      });
    }
  }

  return NextResponse.next();
}

See ChaosMonkey