PulseMetrics Cloud Telemetry Application
17 Static Routes SSG
Interactive application preview with side-by-side Vite CSR vs Next.js 16 RSC parity comparison
Total Telemetry Requests
284.9M +14.2%
P99 Server Response
18.4ms ▲ 5x Fast
Turbopack Build Duration
7.6s Rust Engine
Static Pages Generated
17 / 17 1379ms
Active Cloud Nodes
64 / 64 Online
● Global Edge Cluster Healthy
Edge Cache Hit Ratio
99.42%
Optimized with OpenNext v5
SSG Page Build Time
1,379 ms
2 Workers Parallel Export
Connected Infrastructure Services
Next.js 16 Server Components
API Gateway (app/api/proxy.ts)
Operational · 12ms
PostgreSQL Vector DB (Supabase MCP Hook)
Connected · 1.4M rows
Turbopack Asset Pipeline (Critters optimizeCss)
Active · Inlined
LIVE INGESTION STREAM (/api/v1/telemetry)
● 100 events/sec
[11:41:03] GET /overview 200 OK — 14ms (RSC Payload Cached)
[11:41:05] POST /api/telemetry 201 Created — 22ms
[11:41:08] GET /settings 200 OK — 9ms (Turbopack Preload)
[11:41:10] GET /_next/static/chunks/app_overview_page.js 304 — 2ms
CI/CD Deployment Matrix
Production (main@8a920b6)
Netlify Auto-Deploy · Next.js 16.1.1
Staging Preview (feat/turbopack)
OpenNext v5 · Static Export (17/17)
Runtime Configuration
NEXT_PUBLIC_APP_ENV:
production
TURBOPACK_BUILD:
true
EXPERIMENTAL_OPTIMIZE_CSS:
true
NETLIFY_PLUGIN_NEXTJS:
5.9.4
Parity Verification Checklist: Vite SPA ⟷ Next.js 16 Turbopack
100% Parity Verified · 0px Layout Shift
✓ Typography & Colors: Exact Sora, Outfit, JetBrains font stacks preserved
✓ Route Switching: Zero flash, sub-15ms client transitions via
next/navigation✓ DOM & CSS Tokens: Pixel-perfect CSS variable alignment and Tailwind parity
✓ Interactive State: Event handlers insulated inside
'use client' boundaries✓ SEO Metadata: Upgraded from client tags to static Next.js 16
Metadata✓ SSR Hydration: 0 hydration mismatch errors; window safely guarded
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Production deploys
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Production: main@8a920b6
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Observability
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Last hour (Feb 18, 9:03 PM to Feb 18, 10:03 PM)
Errors: 0.000%
Deploy log
(Lines 66 – 85)
Antigravity & Cursor Migration Pipeline
The Clue Mechanism
5-Stage automated AST transformation from Vite SPA to Next.js 16 App Router
1
Package Modernization
2
Root Layout (RSC)
3
Router AST Transform
4
Client Boundaries
5
Next 16 Proxy & Deploy
📁 .cursorrules / .agents/rules
# Next.js 16 & Turbopack Migration Protocol
- Deprecate `react-router-dom`: replace with `next/navigation` and `next/link`.
- Detect any component using hooks (`useState`, `useEffect`) or events; prepend `'use client';`.
- Transform `index.html` root into `app/layout.tsx` using `next/font/google` and `Metadata`.
- In Next.js 16, migrate `middleware.ts` to `proxy.ts` to avoid deprecation warnings.
- In `next.config.ts`, declare `turbo: {}` and `experimental: { optimizeCss: true }`.
- Run production validation via `next build` before committing to Netlify.
⚡ Antigravity Agent Master Prompt
Migrate this repository from Vite + React SPA to Next.js 16 with Turbopack: 1. Update `package.json` with `next@16.1.1` and `react@19`. 2. Convert `src/App.tsx` routes into App Router segment folders under `app/`. 3. Separate Client Components by adding `'use client'` to interactive modules. 4. Replace legacy `middleware.ts` with Next.js 16 route `proxy.ts`. 5. Enable `optimizeCss: true` in `next.config.ts`. 6. Verify production build passes `next build` with zero errors.
Turbopack Engine Telemetry & Scaling Benchmarks
Rust Task Cache
Real-time performance comparison: Webpack 5 vs Vite vs Next.js 16 Turbopack
Cold Dev Start Time
Duration to boot local development environment from cache
Production Build Duration (
next build)Matches reference screenshot: ✓ Compiled in 7.6s
Why Turbopack in Next.js 16 Outperforms Webpack and Rollup
1. Function-Level Incremental Cache: Rather than re-bundling entire modules on change, Turbopack caches the evaluated results of individual AST functions in a persistent memory graph.
2. Rust Memory Layout: Zero garbage collection pauses. Native Rust structs and parallel rayon work-stealing threads compile code across all available CPU cores simultaneously.
3. Native CSS Optimization: Eliminates PostCSS/LightningCSS round-trip overhead by performing critical CSS inlining directly during the layout synthesis pass.
The 5 Next.js 16 Migration Traps & Automated Diagnostic Suite
Automated Engine
Common pitfalls when transitioning from Vite SPA to Next.js 16 and automated verification
TRAP 1
Deprecated
middleware.ts File Convention (Line 72 in Log)Next.js 16 deprecates the root edge middleware convention in favor of route-level proxies, generating compilation warnings during builds.
Remedy: Migrate
middleware.ts logic to proxy.ts or configure reverse proxy rules in next.config.ts.
TRAP 2
Unguarded
window / localStorage References in Server ComponentsVite SPAs execute exclusively in the browser where global
window exists. Next.js 16 evaluates components on the server first, causing ReferenceError: window is not defined crashes.Remedy: Wrap browser APIs in
typeof window !== 'undefined' or execute inside useEffect().
TRAP 3
Missing
'use client' Directives on Interactive HooksComponents declaring
useState, useEffect, or event handlers fail to build in Next.js App Router if they omit the client directive.Remedy: Place
'use client'; at the exact first line of stateful component files.
TRAP 4
Lingering
react-router-dom Primitives (useNavigate, <Link to>)Importing
react-router-dom inside Next.js creates bundle bloat and routing collisions with Next's file-based router.Remedy: Replace with
next/navigation (useRouter, usePathname) and next/link (<Link href>).
TRAP 5
Netlify Build Output & OpenNext Plugin Mismatches
Deploying Next.js 16 to Netlify without the latest
@netlify/plugin-nextjs v5+ can lead to 404s on dynamic SSR routes.Remedy: Declare
[[plugins]] package = "@netlify/plugin-nextjs" in netlify.toml.