这是indexloc提供的服务，不要输入任何密码
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서비스 워커 로직을 수정합니다. #99

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Merged
merged 4 commits into from
Sep 28, 2023
Merged

서비스 워커 로직을 수정합니다. #99

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bd3914d
♻️ extract resource caching logic
puffcocos Sep 28, 2023
6ecf239
✨ remove old cache on activate event
puffcocos Sep 28, 2023
fe4f519
♻️ change function declaration order
puffcocos Sep 28, 2023
7215315
✨ cache first, 408 when fetch fail
puffcocos Sep 28, 2023
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69 changes: 46 additions & 23 deletions client/public/sw.js
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
const CACHE_VERSION = 'editty-cache-v2'
const CACHE_VERSION = 'editty-cache-v3'

const ICON_PATH = '/assets/images'
const ICON_CACHE = [
Expand All @@ -22,35 +22,58 @@ const ICON_CACHE = [
].map((icon) => `${ICON_PATH}/${icon}.svg`)
const PAGE_CACHE = ['./index.html', './manifest.json']

self.addEventListener('activate', (ev) => {
ev.waitUntil(deleteOldCache())
})

async function deleteOldCache() {
const cacheKeys = await caches.keys()
const cacheToDelete = cacheKeys.filter((key) => key !== CACHE_VERSION)
const deleteCacheJobs = cacheToDelete.map(deleteCache)
await Promise.all(deleteCacheJobs)
}

async function deleteCache(key) {
await caches.delete(key)
}

self.addEventListener('install', (ev) => {
ev.waitUntil(
(async () => {
const cache = await caches.open(CACHE_VERSION)
return cache.addAll([...ICON_CACHE, ...PAGE_CACHE])
})()
)
ev.waitUntil(cacheResource())
})

self.addEventListener('fetch', (ev) => {
async function cacheResource() {
const cache = await caches.open(CACHE_VERSION)
return cache.addAll([...ICON_CACHE, ...PAGE_CACHE])
}

self.addEventListener('fetch', async (ev) => {
if (ev.request.method !== 'GET') {
return
}

ev.respondWith(
(async () => {
const cache = await caches.open(CACHE_VERSION)
ev.respondWith(cacheFirst(ev.request))
})

let resource = null
async function cacheFirst(request) {
const cachedResponse = await caches.match(request)

try {
const response = await fetch(ev.request)
cache.put(ev.request, response.clone())
resource = response
} catch {
resource = await cache.match(ev.request)
}
if (cachedResponse) {
return cachedResponse
}

return resource
})()
)
})
try {
const response = await fetch(request)
putCache(request, response)
return response
} catch {
return new Response('Network error!', {
status: 408,
headers: { 'Content-Type': 'text/plain' },
})
}
}

async function putCache(request, response) {
const cache = await caches.open(CACHE_VERSION)
cache.put(request, response.clone())
}