/**
 * SEO Cache Manager
 *
 * Extends the base cache manager with SEO-specific caching strategies
 * and invalidation patterns. Provides optimized caching for SEO analysis,
 * schema generation, and audit results.
 *
 * @since 2.7.0
 */
import { CacheManager } from "./CacheManager.js";
/**
 * SEO-specific cache manager
 *
 * Implements specialized caching strategies for SEO operations:
 * - Content analysis results (6 hour default TTL)
 * - Schema markup (24 hour default TTL)
 * - Site audits (1 hour default TTL)
 * - Keyword research (7 day default TTL)
 * - SERP data (12 hour default TTL)
 */
export declare class SEOCacheManager extends CacheManager {
    private readonly SEO_CACHE_PREFIX;
    private readonly logger;
    private readonly seoConfig;
    /**
     * Default TTL values for different SEO operations
     */
    private readonly DEFAULT_TTL;
    constructor();
    /**
     * Get SEO-specific cache key
     *
     * @param type - Type of SEO operation
     * @param site - Site identifier
     * @param identifier - Unique identifier (post ID, etc.)
     * @param suffix - Additional suffix for uniqueness
     * @returns Formatted cache key
     */
    getSEOCacheKey(type: keyof typeof this.DEFAULT_TTL, site: string, identifier: string | number, suffix?: string): string;
    /**
     * Cache SEO analysis result
     *
     * @param postId - WordPress post ID
     * @param analysisType - Type of analysis performed
     * @param result - Analysis result to cache
     * @param site - Site identifier
     * @param ttl - Optional custom TTL
     */
    cacheAnalysis(postId: number, analysisType: string, result: unknown, site?: string, ttl?: number): Promise<void>;
    /**
     * Get cached SEO analysis result
     *
     * @param postId - WordPress post ID
     * @param analysisType - Type of analysis
     * @param site - Site identifier
     * @returns Cached result or null
     */
    getCachedAnalysis(postId: number, analysisType: string, site?: string): unknown | null;
    /**
     * Cache schema markup
     *
     * @param postId - WordPress post ID
     * @param schemaType - Type of schema
     * @param schema - Schema markup to cache
     * @param site - Site identifier
     * @param ttl - Optional custom TTL
     */
    cacheSchema(postId: number, schemaType: string, schema: unknown, site?: string, ttl?: number): Promise<void>;
    /**
     * Get cached schema markup
     *
     * @param postId - WordPress post ID
     * @param schemaType - Type of schema
     * @param site - Site identifier
     * @returns Cached schema or null
     */
    getCachedSchema(postId: number, schemaType: string, site?: string): unknown | null;
    /**
     * Cache site audit results
     *
     * @param auditType - Type of audit performed
     * @param result - Audit results
     * @param site - Site identifier
     * @param ttl - Optional custom TTL
     */
    cacheAudit(auditType: string, result: unknown, site?: string, ttl?: number): Promise<void>;
    /**
     * Get cached audit results
     *
     * @param auditType - Type of audit
     * @param site - Site identifier
     * @returns Cached audit or null
     */
    getCachedAudit(auditType: string, site?: string): unknown | null;
    /**
     * Invalidate all SEO cache for a specific post
     *
     * Called when a post is updated to ensure fresh SEO analysis
     *
     * @param postId - WordPress post ID
     * @param site - Site identifier
     */
    invalidatePostSEO(postId: number, site?: string): Promise<void>;
    /**
     * Invalidate all SEO cache for a site
     *
     * Called during major updates or when site-wide changes occur
     *
     * @param site - Site identifier
     */
    invalidateSiteSEO(site?: string): Promise<void>;
    /**
     * Invalidate cache entries matching a pattern
     *
     * @param pattern - Cache key pattern to match
     * @private
     */
    private invalidatePattern;
    /**
     * Get cache statistics for SEO operations
     *
     * @returns Object with cache statistics
     */
    getSEOCacheStats(): {
        totalEntries: number;
        byType: Record<string, number>;
        hitRate: number;
    };
    /**
     * Preload cache with common SEO data
     *
     * Useful for warming up the cache with frequently accessed data
     *
     * @param site - Site identifier
     * @param postIds - Array of post IDs to preload
     */
    preloadSEOCache(site?: string, postIds?: number[]): Promise<void>;
    /**
     * Get all cache keys from the base cache manager
     *
     * @private
     */
    private getAllKeys;
    /**
     * Clear all SEO-related cache entries
     */
    clearSEOCache(): Promise<void>;
}
export declare const seoCache: SEOCacheManager;
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