mirror of
https://github.com/koel/koel
synced 2024-12-25 03:53:05 +00:00
50 lines
1 KiB
TypeScript
50 lines
1 KiB
TypeScript
const CACHE_EXPIRATION_TIME = 1000 * 60 * 60 * 24 // 1 day
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export const Cache = {
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storage: new Map<any, {
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time: number,
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value: any
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}>(),
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normalizeKey: (key: any) => typeof key === 'object' ? JSON.stringify(key) : key,
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has (key: any) {
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return this.hit(this.normalizeKey(key))
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},
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set (key: any, value: any) {
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this.storage.set(this.normalizeKey(key), {
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value,
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time: Date.now()
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})
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},
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hit (key: any) {
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return !this.miss(this.normalizeKey(key))
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},
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miss (key: any) {
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key = this.normalizeKey(key)
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if (!this.storage.has(key)) return true
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const { time } = this.storage.get(key)!
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if (time < Date.now() - CACHE_EXPIRATION_TIME) {
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this.storage.delete(key)
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return true
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}
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return false
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},
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invalidate (key: any) {
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this.storage.delete(this.normalizeKey(key))
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},
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resolve<T> (key: any, resolver: Closure) {
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key = this.normalizeKey(key)
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this.hit(key) || this.set(key, resolver())
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return this.storage.get(key)!.value
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}
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}
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