/**
 * Infrastructure: Advanced Metrics Collector
 * Tracks latency percentiles, throughput, and other advanced metrics
 */
export interface LatencyMetrics {
    readonly p50: number;
    readonly p95: number;
    readonly p99: number;
    readonly p999: number;
    readonly min: number;
    readonly max: number;
    readonly avg: number;
    readonly count: number;
}
export interface CompressionMetrics {
    readonly avgRatio: number;
    readonly avgTime: number;
    readonly totalOriginalBytes: number;
    readonly totalCompressedBytes: number;
    readonly totalSavedBytes: number;
    readonly count: number;
}
export declare class MetricsCollector {
    private latencies;
    private compressionRatios;
    private compressionTimes;
    private operationTimestamps;
    private totalOriginalBytes;
    private totalCompressedBytes;
    private readonly maxSamples;
    /**
     * Record a latency measurement
     */
    recordLatency(ms: number): void;
    /**
     * Record compression metrics
     */
    recordCompression(originalSize: number, compressedSize: number, timeMs: number): void;
    /**
     * Get latency percentiles
     */
    getLatencyMetrics(): LatencyMetrics;
    /**
     * Get compression metrics
     */
    getCompressionMetrics(): CompressionMetrics;
    /**
     * Calculate percentile from sorted array
     */
    private getPercentile;
    /**
     * Reset all metrics
     */
    reset(): void;
    /**
     * Get throughput (operations per second)
     */
    getThroughput(windowSeconds?: number): number;
}
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