home page updated
This commit is contained in:
2
openspec/changes/service-workers/.openspec.yaml
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2
openspec/changes/service-workers/.openspec.yaml
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schema: spec-driven
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created: 2026-02-10
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52
openspec/changes/service-workers/design.md
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52
openspec/changes/service-workers/design.md
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## Context
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This change introduces a Service Worker to improve perceived load time and reduce network usage on repeat visits by caching critical assets in the browser.
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The site is a static Astro build. That means:
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- The Service Worker should live at the site root (`/sw.js`) so it can control all routes.
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- Navigations (HTML documents) should not be cached in a way that causes indefinite staleness after new deploys.
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## Goals / Non-Goals
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**Goals:**
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- Improve repeat-visit performance by pre-caching the critical site shell assets.
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- Add runtime caching for media assets (images) with bounded storage usage.
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- Ensure safe update behavior: cache versioning and cleanup on activate.
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- Keep local development predictable by not registering the Service Worker in dev by default.
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**Non-Goals:**
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- Full offline-first experience for all routes/content.
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- Background sync, push notifications, or complex offline fallbacks.
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- Server-side caching (handled by separate changes, if desired).
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## Decisions
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1. **Implement a lightweight, custom Service Worker (no Workbox)**
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Rationale: The project already outputs static assets and the needed caching strategies are straightforward. A small custom `/sw.js` avoids adding a build-time dependency and keeps behavior explicit.
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Alternatives considered:
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- Workbox: powerful, but adds dependency surface area and build configuration overhead.
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2. **Cache strategy by request type**
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Rationale: Different resources have different freshness requirements.
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- Navigations (HTML documents): **Network-first**, fallback to cache on failure. This minimizes stale HTML risks while still helping resiliency.
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- Static shell assets (CSS/JS/fonts/icons): **Pre-cache** on install and serve from cache for speed.
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- Images/media: **Cache-first** with a size bound and eviction to avoid unbounded storage.
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3. **Versioned caches + activation cleanup**
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Rationale: Static sites frequently redeploy; versioning ensures updates can be picked up and old assets are not served after deploy. On activate, the SW deletes prior version caches.
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Implementation approach:
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- Use cache names like `shell-v<version>` and `media-v<version>`.
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- Update the version string on build (initially a constant; later can be automated).
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4. **Disable SW registration in development by default**
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Rationale: Service worker caching can confuse local iteration and cause stale assets during development.
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Implementation approach:
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- Register SW only when `import.meta.env.PROD` is true (Astro build-time flag) or an explicit runtime guard is met.
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## Risks / Trade-offs
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- **[Stale or broken assets after deploy]** → Use versioned caches and delete old caches during activation. Prefer network-first for navigations.
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- **[Over-caching HTML causes outdated content]** → Do not use cache-first for navigation; do not pre-cache HTML pages.
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- **[Storage growth due to images]** → Enforce a max-entry limit with eviction for media cache.
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- **[Browser compatibility gaps]** → Service worker is progressive enhancement; site must still function without it.
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27
openspec/changes/service-workers/proposal.md
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openspec/changes/service-workers/proposal.md
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## Why
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Improve page load performance (especially repeat visits) by caching key assets closer to the user and reducing unnecessary network requests.
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## What Changes
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- Add a Service Worker to the site so the browser can cache and serve core assets efficiently.
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- Pre-cache the critical shell (CSS, JS, fonts, icons) and use a runtime caching strategy for images and other large assets.
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- Ensure safe update behavior on deploy (new service worker activates and old caches are cleaned up).
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- Keep development experience predictable (service worker disabled or bypassed in dev by default).
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## Capabilities
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### New Capabilities
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- `service-worker-performance`: Provide a service worker-based caching strategy that improves perceived load time and reduces network usage on repeat visits, while ensuring safe updates on new deploys.
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### Modified Capabilities
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- (none)
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## Impact
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- Adds new client-side assets for the service worker (e.g., `sw.js`) and registration logic in the site layout.
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- Changes browser caching behavior; must avoid serving stale HTML indefinitely and ensure caches are versioned/invalidated on deploy.
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- Service workers require a secure context (HTTPS) in production; local dev behavior should be explicitly controlled to avoid confusing caching during iteration.
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## ADDED Requirements
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### Requirement: Service Worker registration
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The site SHALL register a Service Worker on supported browsers when running in production (HTTPS), scoped to the site root so it can control all site pages.
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#### Scenario: Production registration
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- **WHEN** a user loads any page in a production environment
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- **THEN** the site registers a service worker at `/sw.js` with scope `/`
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#### Scenario: Development does not register
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- **WHEN** a user loads any page in a local development environment
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- **THEN** the site does not register a service worker
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### Requirement: Pre-cache critical site shell assets
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The Service Worker SHALL pre-cache a set of critical static assets required to render the site shell quickly on repeat visits.
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#### Scenario: Pre-cache on install
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- **WHEN** the service worker is installed
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- **THEN** it caches the configured site shell assets in a versioned cache
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### Requirement: Runtime caching for media assets
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The Service Worker SHALL use runtime caching for media assets (for example images) to reduce repeat network fetches, while ensuring content can refresh.
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#### Scenario: Cache-first for images
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- **WHEN** a user requests an image resource
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- **THEN** the service worker serves the cached image when available, otherwise fetches from the network and stores the response in the media cache
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#### Scenario: Enforce cache size bounds
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- **WHEN** the number of cached media items exceeds the configured maximum
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- **THEN** the service worker evicts older entries to stay within the bound
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### Requirement: Navigation requests avoid indefinite staleness
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The Service Worker MUST NOT serve stale HTML indefinitely for navigation requests.
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#### Scenario: Network-first navigation
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- **WHEN** a user navigates to a page route (a document navigation request)
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- **THEN** the service worker attempts to fetch from the network first and falls back to a cached response if the network is unavailable
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### Requirement: Safe updates and cache cleanup
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The Service Worker SHALL use versioned caches and remove old caches during activation to ensure updated assets are used after a new deploy.
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#### Scenario: Activate new version and clean old caches
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- **WHEN** a new service worker version activates
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- **THEN** it deletes caches from older versions and begins using the current versioned caches
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22
openspec/changes/service-workers/tasks.md
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openspec/changes/service-workers/tasks.md
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## 1. Setup
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- [x] 1.1 Add `sw.js` to site root output (place in `site/public/sw.js`)
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- [x] 1.2 Add service worker registration to the base layout (register only in production)
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## 2. Pre-cache Site Shell
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- [x] 2.1 Implement versioned cache names and an explicit cache version constant
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- [x] 2.2 Implement `install` handler to pre-cache critical shell assets
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- [x] 2.3 Implement `activate` handler to delete old version caches
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## 3. Runtime Caching
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- [x] 3.1 Implement network-first strategy for navigation/document requests with cache fallback
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- [x] 3.2 Implement cache-first strategy for images/media with network fallback
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- [x] 3.3 Add a bounded eviction policy for media cache size
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## 4. Verification
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- [ ] 4.1 Verify service worker registers in production build and does not register in dev
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- [ ] 4.2 Verify repeat navigation and asset loads hit cache (Chrome DevTools Application tab)
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- [ ] 4.3 Verify a new deploy triggers cache version update and old caches are removed
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102
site/content/cache/content.json
vendored
102
site/content/cache/content.json
vendored
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148
site/public/sw.js
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148
site/public/sw.js
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/* Service Worker: lightweight caching for a static Astro site.
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- Navigations: network-first (avoid stale HTML indefinitely)
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- Site shell: pre-cache on install
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- Images: cache-first with bounded eviction
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*/
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// Bump this value on deploy to invalidate caches.
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const CACHE_VERSION = "v1";
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const CACHE_SHELL = `shell-${CACHE_VERSION}`;
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const CACHE_PAGES = `pages-${CACHE_VERSION}`;
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const CACHE_MEDIA = `media-${CACHE_VERSION}`;
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const SHELL_ASSETS = ["/", "/styles/global.css", "/favicon.svg", "/favicon.ico", "/robots.txt"];
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// Keep media cache bounded so we don't grow indefinitely.
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const MAX_MEDIA_ENTRIES = 80;
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const isGet = (request) => request && request.method === "GET";
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const isNavigationRequest = (request) =>
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request.mode === "navigate" || request.destination === "document";
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const isImageRequest = (request, url) => {
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if (request.destination === "image") return true;
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const p = url.pathname.toLowerCase();
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return (
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p.endsWith(".png") ||
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p.endsWith(".jpg") ||
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p.endsWith(".jpeg") ||
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p.endsWith(".webp") ||
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p.endsWith(".gif") ||
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p.endsWith(".avif") ||
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p.endsWith(".svg")
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);
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};
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async function trimCache(cacheName, maxEntries) {
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const cache = await caches.open(cacheName);
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const keys = await cache.keys();
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const extra = keys.length - maxEntries;
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if (extra <= 0) return;
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// Cache keys are returned in insertion order in practice; delete the oldest.
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for (let i = 0; i < extra; i += 1) {
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await cache.delete(keys[i]);
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}
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}
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async function cachePutSafe(cacheName, request, response) {
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// Only cache successful or opaque responses. Avoid caching 404/500 HTML.
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if (!response) return;
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if (response.type !== "opaque" && !response.ok) return;
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const cache = await caches.open(cacheName);
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await cache.put(request, response);
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}
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self.addEventListener("install", (event) => {
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event.waitUntil(
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(async () => {
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const cache = await caches.open(CACHE_SHELL);
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await cache.addAll(SHELL_ASSETS);
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// Activate new worker ASAP to pick up new caching rules.
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await self.skipWaiting();
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})(),
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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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(async () => {
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const keep = new Set([CACHE_SHELL, CACHE_PAGES, CACHE_MEDIA]);
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const keys = await caches.keys();
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await Promise.all(keys.map((k) => (keep.has(k) ? Promise.resolve() : caches.delete(k))));
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await self.clients.claim();
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})(),
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);
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});
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self.addEventListener("fetch", (event) => {
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const { request } = event;
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if (!isGet(request)) return;
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const url = new URL(request.url);
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// Only handle http(s).
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if (url.protocol !== "http:" && url.protocol !== "https:") return;
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// Network-first for navigations (HTML documents). Cache as fallback only.
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if (isNavigationRequest(request)) {
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event.respondWith(
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(async () => {
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try {
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const fresh = await fetch(request);
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// Cache a clone so we can serve it when offline.
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await cachePutSafe(CACHE_PAGES, request, fresh.clone());
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return fresh;
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} catch {
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const cached = await caches.match(request);
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if (cached) return cached;
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// Fallback: try cached homepage shell.
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const home = await caches.match("/");
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if (home) return home;
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throw new Error("No cached navigation fallback.");
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}
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})(),
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);
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return;
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}
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// Cache-first for images/media with bounded cache size.
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if (isImageRequest(request, url)) {
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event.respondWith(
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(async () => {
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const cached = await caches.match(request);
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if (cached) return cached;
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const res = await fetch(request);
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await cachePutSafe(CACHE_MEDIA, request, res.clone());
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await trimCache(CACHE_MEDIA, MAX_MEDIA_ENTRIES);
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return res;
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})(),
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);
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return;
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}
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// Stale-while-revalidate for styles/scripts/fonts from same-origin.
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if (
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url.origin === self.location.origin &&
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(request.destination === "style" ||
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request.destination === "script" ||
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request.destination === "font")
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) {
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event.respondWith(
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(async () => {
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const cached = await caches.match(request);
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const networkPromise = fetch(request)
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.then(async (res) => {
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await cachePutSafe(CACHE_SHELL, request, res.clone());
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return res;
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})
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.catch(() => null);
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return cached || (await networkPromise) || fetch(request);
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})(),
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);
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}
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});
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@@ -55,6 +55,24 @@ const canonicalUrl = `${siteUrl}${canonicalPath.startsWith("/") ? canonicalPath
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<script async defer data-website-id={cfg.umami.websiteId} src={cfg.umami.scriptUrl} />
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) : null
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}
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{
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// Register SW only in production builds (Astro sets import.meta.env.PROD at build time).
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import.meta.env.PROD ? (
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<script is:inline>
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{`
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if ("serviceWorker" in navigator) {
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// SW requires HTTPS (or localhost). In prod we expect HTTPS.
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window.addEventListener("load", () => {
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navigator.serviceWorker.register("/sw.js", { scope: "/" }).catch(() => {
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// noop: SW is progressive enhancement
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});
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});
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}
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`}
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</script>
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) : null
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}
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</head>
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<body>
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<a class="skip-link" href="#main-content">Skip to content</a>
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@@ -108,15 +126,7 @@ const canonicalUrl = `${siteUrl}${canonicalPath.startsWith("/") ? canonicalPath
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>
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Blog
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</a>
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<a
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href="/about"
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data-umami-event="click"
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data-umami-event-target_id="nav.about"
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data-umami-event-placement="nav"
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data-umami-event-target_url="/about"
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>
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About
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</a>
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</nav>
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</header>
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@@ -1,34 +0,0 @@
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---
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import BaseLayout from "../layouts/BaseLayout.astro";
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import CtaLink from "../components/CtaLink.astro";
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import { LINKS } from "../lib/links";
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---
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<BaseLayout
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title="About | SanthoshJ"
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description="About SanthoshJ and where to follow."
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canonicalPath="/about"
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>
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<section class="section">
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<div class="section-header">
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<h2>About</h2>
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<span class="muted">Tech, streaming, movies, travel</span>
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</div>
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<div class="empty">
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<p style="margin-top: 0;">
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This is a lightweight site that aggregates my content so it can be discovered via search and
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shared cleanly.
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</p>
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<div class="cta-row">
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<CtaLink platform="youtube" placement="about" url={LINKS.youtubeChannel} label="YouTube" />
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<CtaLink
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platform="instagram"
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placement="about"
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url={LINKS.instagramProfile}
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label="Instagram"
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/>
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<CtaLink platform="podcast" placement="about" url={LINKS.podcast} label="Podcast" />
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</div>
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</div>
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</section>
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</BaseLayout>
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@@ -26,22 +26,21 @@ const pods = podcastEpisodes(cache)
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<BaseLayout
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title="SanthoshJ | Tech, streaming, movies, travel"
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description="A fast, SEO-first home for videos, movie posts, and the Irregular Mind podcast."
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description="SanthoshJ shares tech, gaming streams, movie recommendations, and travel stories—plus the Irregular Mind podcast. Explore the newest videos and episodes."
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canonicalPath="/"
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>
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<section class="hero">
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<div>
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<h1>Fast content. Clear next actions.</h1>
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<h1>Tech, gaming, movies & travel — videos + podcast by SanthoshJ</h1>
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<p>
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I post about technology, game streaming, movies, and travel. This site collects the best of
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it and points you to the platform you prefer.
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Quick takes and long-form stories: tech explainers, game streaming highlights, movie recommendations, and travel notes—curated in one place.
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</p>
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<div class="cta-row">
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<CtaLink
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platform="youtube"
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placement="hero"
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url={LINKS.youtubeChannel}
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label="Subscribe on YouTube"
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label="Watch on YouTube"
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class="primary"
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/>
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<CtaLink
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@@ -54,7 +53,7 @@ const pods = podcastEpisodes(cache)
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platform="podcast"
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placement="hero"
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url={LINKS.podcast}
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label="Listen to the podcast"
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label="Listen to the Irregular Mind on Spotify"
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/>
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</div>
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<p class="muted" style="margin-top: 14px;">
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@@ -62,10 +61,9 @@ const pods = podcastEpisodes(cache)
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</p>
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</div>
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<div class="empty">
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<strong>Goal:</strong> 10% month-over-month growth in followers and engagement.
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<br />
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<span class="muted"
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>This site is the SEO landing surface that turns search traffic into followers.</span
|
||||
>New videos and episodes every week. Start with the latest drops below.</span
|
||||
>
|
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</div>
|
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</section>
|
||||
|
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Reference in New Issue
Block a user