How does SolidJS implement Server-Side Rendering (SSR)? What rendering modes are available? - 面试题

SolidJS supports Server-Side Rendering (SSR) with multiple rendering modes:

Basic SSR Setup:

javascript
// entry-server.jsx
import { renderToString } from 'solid-js/web';
import App from './App';

export function render(url) {
  return renderToString(() => <App url={url} />);
}

// entry-client.jsx
import { hydrate } from 'solid-js/web';
import App from './App';

hydrate(() => <App />, document);

Rendering Modes:

Static Site Generation (SSG):

javascript
import { renderToStringAsync } from 'solid-js/web';

export async function getStaticPaths() {
  return ['/about', '/contact'];
}

export default async function Page({ params }) {
  return renderToStringAsync(() => <Component />);
}

Server-Side Rendering (SSR):

javascript
import { StartServer, createHandler } from '@solidjs/start/server';

export default createHandler(() => (
  <StartServer
    document={({ assets, children }) => (
      <html>
        <head>{assets}</head>
        <body>{children}</body>
      </html>
    )}
  />
));

Streaming Rendering:

javascript
import { renderToStream } from 'solid-js/web';

app.get('*', async (req, res) => {
  const stream = renderToStream(() => <App />);
  stream.pipe(res);
});

Data Fetching:

javascript
// Using createResource for async data
const [data] = createResource(fetchData, {
  initialValue: null,
  deferStream: true // Supports streaming
});

// Server-side data prefetch
export async function getData() {
  return await fetchData();
}

Isomorphic Application:

javascript
// Code that runs on both server and client
function Component() {
  const isServer = useIsServer();
  
  return (
    <div>
      {isServer() ? 'Server' : 'Client'}
    </div>
  );
}

Performance Optimization:

Use deferStream for lazy loading
Prefetch critical data
Optimize hydration process
Use Suspense boundaries