44 lines
1013 B
TypeScript
44 lines
1013 B
TypeScript
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interface CacheEntry<T> {
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data: T;
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expiresAt: number;
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}
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class MailCache {
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private cache = new Map<string, CacheEntry<any>>();
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private readonly maxEntries = 1000;
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constructor() {
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setInterval(() => this.sweep(), 60_000);
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}
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get<T>(key: string): T | null {
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const entry = this.cache.get(key);
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if (!entry) return null;
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if (Date.now() > entry.expiresAt) {
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this.cache.delete(key);
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return null;
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}
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return entry.data as T;
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}
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set<T>(key: string, data: T, ttlMs: number) {
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if (this.cache.size >= this.maxEntries) this.sweep();
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this.cache.set(key, { data, expiresAt: Date.now() + ttlMs });
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}
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invalidateByPrefix(prefix: string) {
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for (const key of this.cache.keys()) {
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if (key.startsWith(prefix)) this.cache.delete(key);
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}
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}
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private sweep() {
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const now = Date.now();
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for (const [key, entry] of this.cache.entries()) {
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if (now > entry.expiresAt) this.cache.delete(key);
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}
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}
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}
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export const mailCache = new MailCache();
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