/**
 * Contract interface for key-value cache stores.
 *
 * No default first-party implementation is currently shipped.
 *
 * @module extensions/cache/cache-store
 */
/**
 * CacheStore contract interface.
 *
 * Implementations provide key-value caching with optional TTL support.
 */
export interface CacheStore {
    /** Retrieve a cached value by key. Returns `undefined` on miss. */
    get<T = unknown>(key: string): Promise<T | undefined>;
    /** Store a value under the given key with an optional TTL in seconds. */
    set<T = unknown>(key: string, value: T, ttl?: number): Promise<void>;
    /** Delete a cached entry. */
    delete(key: string): Promise<void>;
    /** Check whether a key exists in the cache. */
    has(key: string): Promise<boolean>;
    /** Remove all entries from the cache. */
    clear(): Promise<void>;
    /** Close connections and release resources. */
    disconnect?(): Promise<void>;
}
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