# gaowanlu/google architecture

> Architecture diagram of the GitHub repository gaowanlu/google, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-25). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/gaowanlu/google
- Repository: https://github.com/gaowanlu/google

## Overview

This is a small Next.js site whose documented purpose is to expose a configurable upstream website through a Vercel-hosted proxy. The main runtime path is an incoming browser request, the proxy handler, and the configured upstream. The README also documents domain/DNS setup and Vercel deployment; the supplied source does not show their configuration internals. The homepage appears to be a separate placeholder UI.

Main entry points: [`api/proxy.js`](https://github.com/gaowanlu/google/blob/master/api/proxy.js) (Proxy handler), [`pages/_app.js`](https://github.com/gaowanlu/google/blob/master/pages/_app.js) (App shell), [`styles/index.js`](https://github.com/gaowanlu/google/blob/master/styles/index.js) (Homepage)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_proxy["Proxy runtime"]
  node_proxy_handler["Proxy handler<br/>[proxy.js]"]
  node_upstream["Configured upstream"]
end

subgraph group_site["Website shell"]
  node_home["Homepage<br/>[index.js]"]
  node_app_shell["App shell<br/>[_app.js]"]
  node_hello_api["Hello API<br/>[hello.js]"]
end

subgraph group_hosting["Hosting setup"]
  node_vercel["Vercel hosting"]
  node_dns["Domain DNS"]
end

node_browser(("Browser"))
node_domain_admin(("Domain administrator"))

node_browser -->|"requests site"| node_vercel
node_vercel -->|"invokes handler"| node_proxy_handler
node_proxy_handler -->|"proxies request"| node_upstream
node_upstream -->|"returns response"| node_proxy_handler
node_proxy_handler -->|"returns response"| node_vercel
node_vercel -->|"serves response"| node_browser
node_domain_admin -->|"configures records"| node_dns
node_domain_admin -->|"configures domain"| node_vercel
node_dns -->|"routes domain"| node_vercel
node_vercel -->|"serves app"| node_app_shell
node_app_shell -->|"renders page"| node_home

click node_proxy_handler "https://github.com/gaowanlu/google/blob/master/api/proxy.js"
click node_home "https://github.com/gaowanlu/google/blob/master/styles/index.js"
click node_app_shell "https://github.com/gaowanlu/google/blob/master/pages/_app.js"
click node_hello_api "https://github.com/gaowanlu/google/blob/master/pages/api/hello.js"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_proxy_handler,node_upstream,node_browser toneBlue
class node_home,node_app_shell,node_hello_api toneAmber
class node_vercel,node_dns toneMint
class node_domain_admin toneIndigo
```

## Components

### Proxy runtime

- [Proxy handler](https://github.com/gaowanlu/google/blob/master/api/proxy.js): `api/proxy.js`
- **Configured upstream**

### Website shell

- [Homepage](https://github.com/gaowanlu/google/blob/master/styles/index.js): `styles/index.js`
- [App shell](https://github.com/gaowanlu/google/blob/master/pages/_app.js): `pages/_app.js`
- [Hello API](https://github.com/gaowanlu/google/blob/master/pages/api/hello.js): `pages/api/hello.js`

### Hosting setup

- **Vercel hosting**
- **Domain DNS**

### Other components

- **Browser**
- **Domain administrator**

## Connections

- Browser → Vercel hosting: requests site
- Vercel hosting → Proxy handler: invokes handler
- Proxy handler → Configured upstream: proxies request
- Configured upstream → Proxy handler: returns response
- Proxy handler → Vercel hosting: returns response
- Vercel hosting → Browser: serves response
- Domain administrator → Domain DNS: configures records
- Domain administrator → Vercel hosting: configures domain
- Domain DNS → Vercel hosting: routes domain
- Vercel hosting → App shell: serves app
- App shell → Homepage: renders page