feat(sw): 升级缓存版本并优化资源缓存策略
- 更新缓存名称从 v1.0.1 到 v1.1.0 - 移除部分图片资源路径配置 - 安装阶段增加 skipWaiting 强制更新 - 优化 fetch 拦截逻辑,区分 HTML、音频、图片及静态资源处理 - 增加对带版本号请求的特殊处理 - 激活阶段主动声明客户端控制权 - 改进缓存匹配忽略查询参数提高命中率 - 增强错误捕获避免中断服务工作线程运行
This commit is contained in:
94
js/sw.js
94
js/sw.js
@@ -1,5 +1,4 @@
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// Service Worker for PWA
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const CACHE_NAME = 'honesty-home-v1.0.1';
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const CACHE_NAME = 'honesty-home-v1.1.0';
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const urlsToCache = [
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'./index.html',
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'./about.html',
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@@ -7,87 +6,82 @@ const urlsToCache = [
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'./css/about.css',
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'./css/artalk.css',
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'./js/config.js',
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'./js/main.js',
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'./js/about.js',
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'./images/avatar.jpeg',
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'./images/favicon.ico',
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'./images/favicon.png',
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'./images/logo.png',
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'./images/INFJ.png',
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'./images/kl.gif',
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'./images/bj/1.jpg',
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'./images/bj/2.jpg',
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'./images/bj/3.jpg',
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'./images/bj/4.jpg',
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'./images/bj/5.jpg',
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'./images/bj/6.jpg',
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'./images/bj/7.jpg',
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'./images/favicon.png',
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'./images/logo.png',
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'./images/INFJ.png'
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];
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// 安装事件 - 缓存资源
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self.addEventListener('install', event => {
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event.waitUntil(
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caches.open(CACHE_NAME)
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.then(cache => {
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console.log('Opened cache');
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return cache.addAll(urlsToCache);
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})
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.catch(() => Promise.resolve())
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);
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self.skipWaiting();
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});
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// 获取事件 - 拦截网络请求
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self.addEventListener('fetch', event => {
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// 对于非GET请求或者不是同源请求,直接跳过
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if (event.request.method !== 'GET' || !event.request.url.startsWith(self.location.origin)) {
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return;
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}
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event.respondWith(
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caches.match(event.request)
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.then(response => {
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// 如果在缓存中找到响应,则返回缓存的资源
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if (response) {
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return response;
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}
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// 克隆请求,因为请求是一个流,只能被消费一次
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const fetchRequest = event.request.clone();
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// 如果没有在缓存中找到,则发起网络请求
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return fetch(fetchRequest).then(response => {
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// 检查响应是否有效
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if (!response || response.status !== 200 || response.type !== 'basic') {
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return response;
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const url = new URL(event.request.url);
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const isHTML = event.request.mode === 'navigate' || url.pathname.endsWith('.html');
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const isVersioned = url.search && /version=/.test(url.search);
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const isAudio = url.pathname.endsWith('.mp3') || url.pathname.endsWith('.wav') || url.pathname.endsWith('.ogg');
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const isImage = /\.(png|jpg|jpeg|gif|webp|svg)$/i.test(url.pathname);
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const isStaticAsset = /\.(css|js|json)$/i.test(url.pathname);
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if (isHTML || isVersioned || isAudio) {
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event.respondWith(
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fetch(event.request)
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.then(resp => {
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if (resp && resp.status === 200 && resp.type === 'basic' && !isAudio) {
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const copy = resp.clone();
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caches.open(CACHE_NAME).then(cache => cache.put(event.request, copy)).catch(() => {});
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}
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// 克隆响应,因为响应是一个流,只能被消费一次
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const responseToCache = response.clone();
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// 打开缓存并将响应添加到缓存中
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caches.open(CACHE_NAME)
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.then(cache => {
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cache.put(event.request, responseToCache);
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});
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return response;
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return resp;
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})
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.catch(() => {
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return caches.match(event.request, { ignoreSearch: true })
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.then(m => m || caches.match(event.request))
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})
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);
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return;
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}
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event.respondWith(
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caches.match(event.request, { ignoreSearch: true })
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.then(cached => {
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if (cached) return cached;
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return fetch(event.request).then(resp => {
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if (resp && resp.status === 200 && resp.type === 'basic' && (isImage || isStaticAsset)) {
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const copy = resp.clone();
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caches.open(CACHE_NAME).then(cache => cache.put(event.request, copy)).catch(() => {});
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}
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return resp;
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});
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})
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);
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);
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});
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// 激活事件 - 清理旧缓存
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self.addEventListener('activate', event => {
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const cacheWhitelist = [CACHE_NAME];
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event.waitUntil(
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caches.keys().then(cacheNames => {
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return Promise.all(
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cacheNames.map(cacheName => {
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if (cacheWhitelist.indexOf(cacheName) === -1) {
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if (!cacheWhitelist.includes(cacheName)) {
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return caches.delete(cacheName);
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}
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})
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);
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})
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);
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});
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self.clients.claim();
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});
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