/**
 * @module runtime/trace-storage
 * @description Storage for request traces with TTL-based expiration
 */
import type { RequestTrace, TraceFilter } from './types/trace.js';
/**
 * Trace storage configuration
 */
export interface TraceStorageConfig {
    /** Maximum traces to store */
    maxTraces: number;
    /** Default TTL in milliseconds */
    ttlMs: number;
    /** Enable compression */
    compression: boolean;
}
/**
 * Storage interface for traces
 */
export interface TraceStorage {
    storeTrace(trace: RequestTrace): Promise<void>;
    getTrace(traceId: string): Promise<RequestTrace | null>;
    listTraces(filter?: TraceFilter): Promise<RequestTrace[]>;
    deleteTrace(traceId: string): Promise<boolean>;
    clear(): Promise<void>;
    getStats(): {
        count: number;
        size: number;
    };
}
/**
 * In-memory trace storage with TTL
 */
export declare class InMemoryTraceStorage implements TraceStorage {
    private traces;
    private config;
    private cleanupInterval?;
    constructor(config?: Partial<TraceStorageConfig>);
    storeTrace(trace: RequestTrace): Promise<void>;
    getTrace(traceId: string): Promise<RequestTrace | null>;
    listTraces(filter?: TraceFilter): Promise<RequestTrace[]>;
    deleteTrace(traceId: string): Promise<boolean>;
    clear(): Promise<void>;
    getStats(): {
        count: number;
        size: number;
    };
    destroy(): void;
    private startCleanup;
    private enforceLimit;
    private matchesFilter;
    private compress;
    private decompress;
}
/**
 * Create a trace storage instance
 */
export declare function createTraceStorage(config?: Partial<TraceStorageConfig>): TraceStorage;
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