import type { CacheBackend } from "../types.js";
export declare class MemoryCacheBackend implements CacheBackend {
    readonly type: "memory";
    private store;
    private globCache;
    private maxEntries;
    private readonly maxSizeBytes;
    private currentSizeBytes;
    constructor(maxEntries?: number, options?: {
        maxSizeBytes?: number;
    });
    private estimateSize;
    private evictOldest;
    get(key: string): Promise<string | null>;
    getWithinLimit(key: string, maximumBytes: number): Promise<string | null>;
    getRemainingTtlSeconds(key: string): Promise<number | null>;
    getBatch(keys: string[]): Promise<Map<string, string | null>>;
    set(key: string, value: string, ttlSeconds?: number): Promise<void>;
    setBatch(entries: Array<{
        key: string;
        value: string;
        ttl?: number;
    }>): Promise<void>;
    del(key: string): Promise<void>;
    delByPattern(pattern: string): Promise<number>;
    clear(): void;
    get size(): number;
    get sizeBytes(): number;
}
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