interface QueueDepthMetrics {
    high: number;
    default: number;
    low: number;
    total: number;
}
interface QueueMetricsSnapshot {
    driver: string;
    pending: QueueDepthMetrics;
    failedCount: number;
}
declare function readRedisQueueDepth(redisUrl: string): Promise<QueueDepthMetrics>;
declare function collectQueueMetrics(): Promise<QueueMetricsSnapshot>;
export type { QueueDepthMetrics, QueueMetricsSnapshot };
export { collectQueueMetrics, readRedisQueueDepth };