import { Redis as Valkey } from "iovalkey";
export declare function getValkey(): Promise<Valkey | null>;
export declare function searchCacheKey(query: string, category: string, timeRange?: string): string;
export declare function fetchCacheKey(url: string): string;
export declare function cacheGet(key: string): Promise<string | null>;
export declare function cacheSet(key: string, value: string, ttl: number): Promise<void>;
export declare function cacheAtomicUpdate(key: string, ttl: number, mutateFn: (raw: string | null) => string, maxRetries?: number): Promise<void>;
export declare function cacheClear(pattern: string): Promise<number>;
export declare function cachePing(): Promise<boolean>;