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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| import { Redis } from '@upstash/redis' | ||
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| import { safeJsonParse } from './helper' | ||
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| const UPSTASH_TOKEN = process.env.UPSTASH_TOKEN | ||
| const UPSTASH_URL = process.env.UPSTASH_URL | ||
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| let redis: Redis | ||
| const getRedis = () => { | ||
| if (redis) { | ||
| return redis | ||
| } | ||
| if (!UPSTASH_TOKEN || !UPSTASH_URL) { | ||
| return null | ||
| } | ||
| const _redis = new Redis({ | ||
| url: UPSTASH_URL, | ||
| token: UPSTASH_TOKEN, | ||
| }) | ||
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| redis = _redis | ||
| return _redis | ||
| } | ||
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| export const setCache = async (key: string, value: string, ttl: number) => { | ||
| const _redis = getRedis() | ||
| if (!_redis) { | ||
| return | ||
| } | ||
| await _redis | ||
| .set(key, value, { | ||
| ex: ttl, | ||
| }) | ||
| .catch((err) => { | ||
| console.error('setCache', err) | ||
| }) | ||
| } | ||
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| export const getCache = async (key: string) => { | ||
| const _redis = getRedis() | ||
| if (!_redis) { | ||
| return null | ||
| } | ||
| return await _redis.get(key).catch((err) => { | ||
| console.error('getCache', err) | ||
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| return null | ||
| }) | ||
| } | ||
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| export const getOrSetCache = async <T>( | ||
| key: string, | ||
| setFn: () => Promise<T>, | ||
| ttl: number, | ||
| ): Promise<T> => { | ||
| const cache = await getCache(key) | ||
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| if (cache) { | ||
| if (typeof cache === 'string') { | ||
| const tryParse = safeJsonParse(cache as any) | ||
| if (tryParse) { | ||
| return tryParse as T | ||
| } | ||
| } else { | ||
| return cache as T | ||
| } | ||
| } | ||
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| const fallbackData = await setFn() | ||
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| await setCache(key, JSON.stringify(fallbackData), ttl) | ||
| return fallbackData | ||
| } | ||
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| export const onlyGetOrSetCacheInVercelButFallback: typeof getOrSetCache = | ||
| async (key, setFn, ttl) => { | ||
| if (process.env.VERCEL || process.env.VERCEL_ENV) { | ||
| return getOrSetCache(key, setFn, ttl) | ||
| } | ||
| return setFn() | ||
| } |