/**
 * SMI-578: CacheRepository - Cache storage for search results and API responses
 */
import type { Database as DatabaseType } from '../db/database-interface.js';
import type { CacheEntry } from '../types/skill.js';
/**
 * Repository for cache operations
 */
export declare class CacheRepository {
    private db;
    private stmts;
    constructor(db: DatabaseType);
    private prepareStatements;
    private rowToEntry;
    /**
     * Get a cached value by key
     */
    get<T = unknown>(key: string): T | null;
    /**
     * Get raw cache entry with metadata
     */
    getEntry(key: string): CacheEntry | null;
    /**
     * Set a cached value with optional TTL in seconds
     */
    set<T>(key: string, value: T, ttlSeconds?: number): void;
    /**
     * Delete a cached value
     */
    delete(key: string): boolean;
    /**
     * Delete all expired entries
     */
    deleteExpired(): number;
    /**
     * Clear all cache entries
     */
    clear(): number;
    /**
     * Check if a key exists (and is not expired)
     */
    has(key: string): boolean;
    /**
     * Count active cache entries
     */
    count(): number;
    /**
     * Get all keys matching a pattern
     */
    keys(pattern?: string): string[];
    /**
     * Get or set a cached value
     */
    getOrSet<T>(key: string, factory: () => T, ttlSeconds?: number): T;
    /**
     * Get or set a cached value (async version)
     */
    getOrSetAsync<T>(key: string, factory: () => Promise<T>, ttlSeconds?: number): Promise<T>;
}
//# sourceMappingURL=CacheRepository.d.ts.map