81 lines
2.6 KiB
JavaScript
81 lines
2.6 KiB
JavaScript
/* vps-manager Service Worker
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* 缓存策略:
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* - 页面导航(HTML):network-first,回源失败才用缓存。保证刷新即拿到最新版本号
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* - 静态资源(?v= 版本号):stale-while-revalidate(先返回缓存秒开,后台自动拉取最新)
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* —— 版本号变了 URL 就变,缓存必 miss,天然回源新文件
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* - /api/* 数据请求:始终走网络,保证数据实时
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* 更新机制:sw.js 由服务端 no-cache 提供,改动后导航时立即被浏览器发现;
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* install 后 skipWaiting + clients.claim 立即接管,无需手动清缓存。
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*/
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const CACHE_NAME = 'vps-manager-v3';
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const PRECACHE_URLS = [
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'/',
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'/static/js/vue.global.prod.js',
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'/static/js/tailwind.js',
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'/static/js/api.js',
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'/static/js/app.js',
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'/static/manifest.json',
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'/static/icons/icon-192.png',
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'/static/icons/icon-512.png',
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];
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self.addEventListener('install', (event) => {
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event.waitUntil(
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caches
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.open(CACHE_NAME)
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.then((cache) => cache.addAll(PRECACHE_URLS))
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.then(() => self.skipWaiting())
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);
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});
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self.addEventListener('activate', (event) => {
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event.waitUntil(
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caches
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.keys()
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.then((keys) =>
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Promise.all(keys.filter((k) => k !== CACHE_NAME).map((k) => caches.delete(k)))
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)
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.then(() => self.clients.claim())
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);
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});
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self.addEventListener('fetch', (event) => {
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const request = event.request;
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if (request.method !== 'GET') return;
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const url = new URL(request.url);
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if (url.origin !== self.location.origin) return;
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// 数据接口走网络,不缓存
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if (url.pathname.startsWith('/api/')) return;
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// 页面导航:network-first,保证每次刷新都拿到最新 HTML(含最新版本号)
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if (request.mode === 'navigate') {
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event.respondWith(
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fetch(request, { cache: 'no-store' })
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.then((response) => {
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const copy = response.clone();
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caches.open(CACHE_NAME).then((cache) => cache.put(request, copy));
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return response;
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})
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.catch(() => caches.match(request))
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);
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return;
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}
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// 静态资源:stale-while-revalidate(版本号控制缓存失效)
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event.respondWith(
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caches.open(CACHE_NAME).then(async (cache) => {
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const cached = await cache.match(request);
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// no-store:绕开浏览器 HTTP 磁盘缓存,保证回源拿到最新版本
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const network = fetch(request, { cache: 'no-store' })
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.then((response) => {
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if (response && response.ok) cache.put(request, response.clone());
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return response;
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})
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.catch(() => cached);
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return cached || network;
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})
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);
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});
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