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Stop updating client cache when revalidated and still expired #549

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merged 3 commits into from
Oct 25, 2023
Merged

Stop updating client cache when revalidated and still expired #549

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44a16aa
Stop updating client cache when revalidated and still expired
mairatma Oct 5, 2023
0730776
Add entry to CHANGELOG.md
mairatma Oct 25, 2023
90feaf3
Merge branch 'master' into perf/removeUnusedDiskWrite
filafb Oct 25, 2023
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11 changes: 10 additions & 1 deletion src/HttpClient/middlewares/cache.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -198,7 +198,16 @@ export const cacheMiddleware = ({ type, storage }: CacheOptions) => {
? (data as Buffer).toString(responseEncoding)
: data

const expiration = Date.now() + (maxAge - currentAge) * 1000
const now = Date.now()
const expiration = now + (maxAge - currentAge) * 1000

const alreadyExpired = expiration <= now
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const reusingRevalidatedCache = cached && (ctx.response === cached.response)
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const shouldSkipCacheUpdate = alreadyExpired && reusingRevalidatedCache
if (shouldSkipCacheUpdate) {
return
}

await storage.set(setKey, {
etag,
expiration,
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