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Improve rendering perf (#4956)

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* Improve rendering perf

* Adding a changeset

* Disable eslint warning
This commit is contained in:
Matthew Phillips 2022-10-03 11:44:58 -04:00 committed by GitHub
parent a59731995b
commit ee8dd424fd
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GPG key ID: 4AEE18F83AFDEB23
8 changed files with 73 additions and 31 deletions
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5
.changeset/fifty-icons-smash.md Normal file
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@ -0,0 +1,5 @@
---
'astro': patch
---
Fix perf regression in SSR

37
packages/astro/src/runtime/server/render/common.ts
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@ -45,35 +45,22 @@ export function stringifyChunk(result: SSRResult, chunk: string | RenderInstruct
}
export class HTMLParts {
public parts: Array<HTMLBytes | string>;
public parts: string;
constructor() {
this.parts = [];
this.parts = ''
}
append(part: string | HTMLBytes | RenderInstruction, result: SSRResult) {
if (ArrayBuffer.isView(part)) {
this.parts.push(part);
this.parts += decoder.decode(part);
} else {
this.parts.push(stringifyChunk(result, part));
this.parts += stringifyChunk(result, part);
}
}
toString() {
let html = '';
for (const part of this.parts) {
if (ArrayBuffer.isView(part)) {
html += decoder.decode(part);
} else {
html += part;
}
}
return html;
return this.parts;
}
toArrayBuffer() {
this.parts.forEach((part, i) => {
if (!ArrayBuffer.isView(part)) {
this.parts[i] = encoder.encode(String(part));
}
});
return concatUint8Arrays(this.parts as Uint8Array[]);
return encoder.encode(this.parts);
}
}
@ -86,15 +73,3 @@ export function chunkToByteArray(
}
return encoder.encode(stringifyChunk(result, chunk));
}
export function concatUint8Arrays(arrays: Array<Uint8Array>) {
let len = 0;
arrays.forEach((arr) => (len += arr.length));
let merged = new Uint8Array(len);
let offset = 0;
arrays.forEach((arr) => {
merged.set(arr, offset);
offset += arr.length;
});
return merged;
}

7
packages/astro/test/benchmark/simple/astro.config.mjs Normal file
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@ -0,0 +1,7 @@
import { defineConfig } from 'astro/config';
import nodejs from '@astrojs/node';
export default defineConfig({
output: 'server',
adapter: nodejs()
});

11
packages/astro/test/benchmark/simple/package.json Normal file
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@ -0,0 +1,11 @@
{
"name": "@benchmark/simple",
"scripts": {
"start": "node server.mjs",
"build": "astro build"
},
"dependencies": {
"astro": "workspace:*",
"@astrojs/node": "workspace:*"
}
}

19
packages/astro/test/benchmark/simple/server.mjs Normal file
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@ -0,0 +1,19 @@
import http from 'http';
import { handler } from './dist/server/entry.mjs';
const listener = (req, res) => {
handler(req, res, err => {
if(err) {
res.writeHead(500);
res.end(err.toString());
} else {
res.writeHead(404);
res.end('Not found');
}
});
};
const server = http.createServer(listener);
server.listen(3002);
// eslint-disable-next-line no-console
console.log(`Listening at http://localhost:3002`);

8
packages/astro/test/benchmark/simple/src/components/Layout.astro Normal file
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@ -0,0 +1,8 @@
<html>
<head>
<title>{ Astro.props.title }</title>
</head>
<body>
<slot />
</body>
</html>

9
packages/astro/test/benchmark/simple/src/pages/index.astro Normal file
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@ -0,0 +1,9 @@
---
import Layout from '../components/Layout.astro';
const name = 'world';
---
<Layout title={`Index page`}>
<h1>index page</h1>
<h2>Hello { name }</h2>
</Layout>

8
pnpm-lock.yaml
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@ -1055,6 +1055,14 @@ importers:
astro: link:../../..
vue: 3.2.40
packages/astro/test/benchmark/simple:
specifiers:
'@astrojs/node': workspace:*
astro: workspace:*
dependencies:
'@astrojs/node': link:../../../../integrations/node
astro: link:../../..
packages/astro/test/fixtures/0-css:
specifiers:
'@astrojs/react': workspace:*