Mengapa Aplikasi Shopify saya dibuat dengan Next.js (React) sangat lambat untuk dimuat?
Saya mengikuti tutorial ini: https://shopify.dev/tutorials/build-a-shopify-app-with-node-and-react
Sejak awal, aplikasi saya sangat lambat dalam memuat, termasuk saat mengganti tab, termasuk saat dimuat melalui ngrok dan dijalankan di localhost atau diterapkan di mesin aplikasi.
Apa yang menyebabkan ini?
PS: Saya baru mengenal pengembangan Aplikasi React, Next.js dan Shopify, jadi jawabannya bisa sangat mendasar.
PPS: Keluaran build tampaknya menunjukkan "First Load JS shared by all" terlalu besar berdasarkan warna merah. Saya tidak tahu bagaimana cara menyelidiki ini dan mengurangi ukuran potongan tersebut meskipun hanya 214KB tidak dapat menjelaskan waktu muat yang lambat, bukan?
Membangun
React Dev Tools Profiler
@ next / bundle-analyzer Output:
Diurai
Gzip
package.json
{
"name": "ShopifyApp1",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"dev": "node server.js NODE_ENV=dev",
"build": "next build",
"deploy": "next build && gcloud app deploy --version=deploy",
"start": "NODE_ENV=production node server.js",
"analyze": "cross-env ANALYZE=true npm run build"
},
"keywords": [],
"author": "",
"license": "ISC",
"dependencies": {
"@google-cloud/storage": "^5.2.0",
"@next/bundle-analyzer": "^9.5.2",
"@sendgrid/mail": "^7.2.3",
"@shopify/app-bridge-react": "^1.26.2",
"@shopify/koa-shopify-auth": "^3.1.65",
"@shopify/koa-shopify-graphql-proxy": "^4.0.1",
"@shopify/koa-shopify-webhooks": "^2.4.3",
"@shopify/polaris": "^5.1.0",
"@zeit/next-css": "^1.0.1",
"apollo-boost": "^0.4.9",
"cors": "^2.8.5",
"cross-env": "^7.0.2",
"dotenv": "^8.2.0",
"email-validator": "^2.0.4",
"extract-domain": "^2.2.1",
"firebase-admin": "^9.0.0",
"graphql": "^15.3.0",
"helmet": "^4.0.0",
"isomorphic-fetch": "^2.2.1",
"js-cookie": "^2.2.1",
"koa": "^2.13.0",
"koa-body": "^4.2.0",
"koa-bodyparser": "^4.3.0",
"koa-helmet": "^5.2.0",
"koa-router": "^9.1.0",
"koa-session": "^6.0.0",
"next": "^9.5.1",
"react": "^16.13.1",
"react-apollo": "^3.1.5",
"react-dom": "^16.13.1",
"react-infinite-scroll-component": "^5.0.5",
"sanitize-html": "^1.27.2",
"scheduler": "^0.19.1",
"store-js": "^2.0.4",
"tldts": "^5.6.46"
},
"devDependencies": {
"webpack-bundle-analyzer": "^3.8.0",
"webpack-bundle-size-analyzer": "^3.1.0"
},
"browser": {
"@google-cloud/storage": false,
"@sendgrid/mail": false,
"@shopify/koa-shopify-auth": false,
"@shopify/koa-shopify-graphql-proxy": false,
"@shopify/koa-shopify-webhooks": false,
"cors": false,
"email-validator": false,
"extract-domain": false,
"firebase-admin": false,
"graphql": false,
"helmet": false,
"isomorphic-fetch": false,
"koa": false,
"koa-body": false,
"koa-bodyparser": false,
"koa-helmet": false,
"koa-router": false,
"koa-session": false,
"sanitize-html": false,
"tldts": false
}
}
Tab Jaringan Alat Pengembang Chrome
EDIT:
npm run dev
Untuk beberapa alasan, waktu muat baris "webpack-hmr" terus meningkat.
npm run build && npm run start
next.config.js
require("dotenv").config({path:"live.env"});
const withCSS = require('@zeit/next-css');
const webpack = require('webpack');
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
const withBundleAnalyzer = require('@next/bundle-analyzer')({enabled: process.env.ANALYZE === 'true'})
const apiKey = JSON.stringify(process.env.SHOPIFY_API_KEY);
module.exports = withBundleAnalyzer(
withCSS({
distDir: 'build',
webpack: (config) => {
const env = { API_KEY: apiKey };
config.plugins.push(new webpack.DefinePlugin(env));
config.plugins.push(new webpack.DefinePlugin(new BundleAnalyzerPlugin()));
config.resolve = {
alias: {
'react-dom$': 'react-dom/profiling',
'scheduler/tracing': 'scheduler/tracing-profiling'
},
...config.resolve
};
return config;
}
})
);
_app.js
import App from 'next/app';
import Head from 'next/head';
import { AppProvider } from '@shopify/polaris';
import { Provider } from '@shopify/app-bridge-react';
import '@shopify/polaris/dist/styles.css'
import translations from '@shopify/polaris/locales/en.json';
import Cookies from 'js-cookie';
import ApolloClient from 'apollo-boost';
import { ApolloProvider } from 'react-apollo';
const client = new ApolloClient({
fetchOptions: {
credentials: 'include'
},
});
class MyApp extends App {
render() {
const { Component, pageProps } = this.props;
const config = { apiKey: API_KEY, shopOrigin: Cookies.get("shopOrigin"), forceRedirect: true };
return (
<React.Fragment>
<Head>
<title>...</title>
<meta charSet="utf-8" />
</Head>
<Provider config={config}>
<AppProvider i18n={translations}>
<ApolloProvider client={client}>
<Component {...pageProps} />
</ApolloProvider>
</AppProvider>
</Provider>
</React.Fragment>
);
}
}
export default MyApp;
Index.js (klien)
import {
Button,
Card,
Form,
FormLayout,
Layout,
Page,
Stack,
TextField,
DisplayText,
Toast,
Frame
} from '@shopify/polaris';
class Index extends React.Component {
state = {
emails: '',
domain: '' ,
alias: '',
err: '',
message: '',
active: false,
loadingDomainResponse: false,
loadingEmailResponse: false
};
componentDidMount() {
fetch(`/state`, {
method: 'GET'
}).then(response => response.json())
.then(result => {
if (result.err) {
this.setState({
err: result.err,
message: result.err,
active: true
})
}
else {
this.setState({
emails: result.emails,
domain: result.domain,
alias: result.alias
})
}
});
};
render() {
const { emails, domain, alias, err, message, active, loadingEmailResponse, loadingDomainResponse} = this.state;
const toastMarkup = active ? (
<Toast content={message} error={err} onDismiss={this.handleToast}/>
) : null;
return (
<Frame>
<Page>
{toastMarkup}
<Layout>
<Layout.AnnotatedSection
title="..."
description="..."
>
<Card sectioned>
<Form onSubmit={this.handleSubmitEmails}>
<FormLayout>
<TextField
value={emails}
onChange={this.handleChange('emails')}
label="..."
type="emails"
maxlength="200"
/>
<Stack distribution="trailing">
<Button primary submit loading={loadingEmailResponse}>
Save
</Button>
</Stack>
</FormLayout>
</Form>
</Card>
</Layout.AnnotatedSection>
<Layout.AnnotatedSection
title="..."
description="..."
>
<Card sectioned>
<DisplayText size="small"> {domain} </DisplayText>
<br/>
<Form onSubmit={this.handleSubmitDomain}>
<FormLayout>
<TextField
value={alias}
onChange={this.handleChange('alias')}
label="..."
type="text"
maxlength="50"
/>
<Stack distribution="trailing">
<Button primary submit loading={loadingDomainResponse}>
Save
</Button>
</Stack>
</FormLayout>
</Form>
</Card>
</Layout.AnnotatedSection>
</Layout>
</Page>
</Frame>
);
}
handleToast = () => {
this.setState({
err: false,
message: false,
active: false
})
};
handleSubmitEmails = () => {
this.setState({loadingEmailResponse:true});
fetch(`/emails`, {
method: 'POST',
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify({
emails: this.state.emails
})
}).then(response => response.json())
.then(result => {
console.log("JSON: "+JSON.stringify(result));
if (result.err) {
this.setState({
err: result.err,
message: result.err,
active: true
})
}
else {
this.setState({message: "...", active: true});
}
this.setState({loadingEmailResponse:false});
});
};
handleSubmitDomain = () => {
this.setState({loadingDomainResponse:true});
fetch(`/domain`, {
method: 'POST',
headers: {
'Content-Type': 'application/json'
},
body:
JSON.stringify({
alias: this.state.alias
})
}).then(response => response.json())
.then(result => {
console.log("JSON: "+JSON.stringify(result));
if (result.err) {
this.setState({
err: result.err,
message: result.err,
active: true
})
}
else {
this.setState({message: "...", active: true});
}
this.setState({loadingDomainResponse:false});
});
};
handleChange = (field) => {
return (value) => this.setState({ [field]: value });
};
}
export default Index;
server.js
const dev = process.env.NODE_ENV !== 'production';
const app = next({ dev });
app.prepare().then(() => {
const server = new Koa();
const router = new Router();
server.use(bodyParser());
server.use(session({ secure: true, sameSite: 'none' }, server));
server.keys = [SHOPIFY_API_SECRET_KEY];
router.get('/state', async (ctx) => {
let domain = ctx.session.shop;
let alias;
const snap = await global.db.collection("...").doc(ctx.session.shop).get();
if (snap.data().alias) {
alias = snap.data().alias;
}
let emails = snap.data().emails;
let emailString = "";
if (!emails) {
ctx.response.body = {err: "..."};
}
else if(emails.length < 4) {
for (email of emails) {
emailString += (","+email);
}
theEmailString = emailString.substring(1);
let response = {
domain: domain,
alias: alias,
emails: theEmailString
}
ctx.response.body = response;
}
else {
ctx.response.body = {err: "..."};
}
});
});
Sunting
Saya telah memberikan jawaban awal, tetapi saya mencari jawaban yang lebih baik jika memungkinkan.
Selain itu, tampaknya mungkin untuk membuat tautan navigasi jembatan aplikasi Shopify menggunakan router next.js alih-alih memicu pemuatan ulang halaman penuh:
https://shopify.dev/tools/app-bridge/actions/navigation
Jika seseorang membagikan bagaimana melakukan itu untuk next.js dengan detail yang cukup, itu akan lebih baik daripada jawaban saya.
Jawaban
Pemuatan awal Anda pada indeks, menurut dev tools waterfall, memakan waktu hampir 2 detik untuk hanya 18,5 KB data. Ini sangat lambat dan sebelum sisa sumber daya Anda tercapai. Pikiran pertama saya adalah kelambatan jaringan / server. Apakah Anda menghosting ini secara lokal atau di server web?
I would strip it down as much as you can, maybe even just try and load a simple index.html file with only a header. If that takes a couple of seconds to load then you may need to either upgrade or migrate to a better host. If you are hosting locally this could just be an issue of your internet having a low upload speed. Many internet plans have fast downloads but slow uploads and you are not always going to get what your ISP promises.
try optimizing your code by removing any unnecessary code. Try to use more dynamic import such that you get a fast initial bioler plate load up and the heavy codes like charts, graphs and pictures and video load at a later time at the client end. import dynamic from "next/dynamic" , this should give the client a quick first paint view like youtube does.
https://nextjs.org/docs/advanced-features/dynamic-import
try out react Formik( An optimize form controler for small apps) and also try using function components over Class Components. Using Next you can do most of you database calls in getStatiProps, getServerSideProps, getStaticPaths. for periodic cached fetching use SWR hook.
I shared load times measured using npm run dev in my question but here is some information about load times in prod mode as well.
Running the app in prod mode (npm run build and npm run start) after removing the embedding into the Shopify admin UI shows that the app takes a total of about 2 seconds to load in prod mode which still seems very slow (Shopify UI was adding about 3 seconds).
The Shopify app bride navigation links would do full page reloads when clicked instead of changing pages like Next.js links would.
Replaced the App Navigation links with Next links.
Still, 1.86 seconds for the first load is very slow, and am open to better solutions.