interface CacheStore {
    get<T>(key: string): Promise<T | undefined>;
    set<T>(key: string, value: T, ttlMs?: number): Promise<void>;
    getOrSet<T>(key: string, loader: () => Promise<T>, ttlMs?: number): Promise<T>;
    attachTags(key: string, tags: string[]): Promise<void>;
    flushTags(tags: string[]): Promise<number>;
    invalidate(key: string): Promise<boolean>;
    invalidateByPrefix(prefix: string): Promise<number>;
    clear(): Promise<void>;
    size(): Promise<number>;
}
export type { CacheStore };