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refactor: reduce one redis flight

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Namekuji 2023-08-04 01:21:56 -04:00
parent d89e24f796
commit f3e545057d
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1 changed files with 5 additions and 4 deletions
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9
packages/backend/src/misc/cache.ts
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@ -148,12 +148,13 @@ class SetCache {
protected async fetch() { protected async fetch() {
// Sync from DB if nothing is cached yet or cache is expired // Sync from DB if nothing is cached yet or cache is expired
const ttlKey = `${this.key}:fetched`; const ttlKey = `${this.key}:fetched`;
const fetched = await redisClient.exists(ttlKey); if (
!(await this.hasFollowing()) ||
if (!(await this.hasFollowing()) || fetched === 0) { (await redisClient.exists(ttlKey)) === 0
) {
await redisClient.del(this.key); await redisClient.del(this.key);
await this.follow(...(await this.fetcher())); await this.follow(...(await this.fetcher()));
await redisClient.set(ttlKey, "yes", "EX", 60 * 30); await redisClient.set(ttlKey, "yes", "EX", 60 * 30); // Expires in 30 minutes
} }
} }