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A Bsky-like frontend using the atprotocol natively.
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interface CacheEntry<T> { data: T; expiresAt: number; }
const cache = new Map<string, CacheEntry<unknown>>();
const DEFAULT_TTL_MS = 2 * 60 * 1000;
export function cacheSet<T>(key: string, data: T, ttlMs = DEFAULT_TTL_MS): void { const expiresAt = ttlMs > 0 ? Date.now() + ttlMs : 0; cache.set(key, { data, expiresAt });}
export function cacheGet<T>(key: string): T | undefined { const entry = cache.get(key); if (!entry) return undefined;
if (entry.expiresAt > 0 && Date.now() > entry.expiresAt) { cache.delete(key); return undefined; }
return entry.data as T;}
export function cacheHas(key: string): boolean { return cacheGet(key) !== undefined;}
export function cacheDelete(key: string): void { cache.delete(key);}
export function cacheClear(): void { cache.clear();}
export function threadCacheKey(uri: string): string { return `thread:${uri}`;}
export function timelineCacheKey(cursor?: string): string { return cursor ? `timeline:${cursor}` : 'timeline:first';}
export function feedCacheKey(feedUri: string): string { return `feed:${feedUri}`;}