54 lines
1.4 KiB
TypeScript
54 lines
1.4 KiB
TypeScript
/*
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* Copyright (C) 2026 Fluxer Contributors
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*
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* This file is part of Fluxer.
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*
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* Fluxer is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Fluxer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
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*/
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interface CacheEntry<T> {
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value: T;
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expiresAt: number | null;
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}
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export class InMemoryCacheService {
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private cache = new Map<string, CacheEntry<unknown>>();
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async get<T>(key: string): Promise<T | null> {
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const entry = this.cache.get(key);
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if (!entry) {
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return null;
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}
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if (entry.expiresAt && entry.expiresAt < Date.now()) {
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this.cache.delete(key);
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return null;
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}
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return entry.value as T;
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}
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async set<T>(key: string, value: T, ttlSeconds?: number): Promise<void> {
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const entry: CacheEntry<T> = {
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value,
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expiresAt: ttlSeconds ? Date.now() + ttlSeconds * 1000 : null,
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};
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this.cache.set(key, entry as CacheEntry<unknown>);
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}
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async delete(key: string): Promise<void> {
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this.cache.delete(key);
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}
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}
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