import { AIConfig } from '../types/config';
import { OptimizationResult } from '../types/ai';
import { QueryMetrics } from '../types/query';
export declare class AIOptimizer {
    private config;
    private cache;
    private semaphore;
    constructor(config: AIConfig, maxConcurrent?: number);
    /**
     * Analyze a slow QueryMetrics record and return an OptimizationResult.
     * Results are cached by normalised SQL text to avoid redundant API calls.
     */
    analyze(metrics: QueryMetrics): Promise<OptimizationResult>;
    private callProvider;
    clearCache(): void;
    get cacheSize(): number;
}
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