export declare function makePairKey(a: string, b: string): string;
export declare function readPair(namespace: string, pairKey: string): {
    address: string;
} | null;
export declare function writePair(namespace: string, pairKey: string, address: string): void;
export declare function readGlobal(namespace: string, ttlMs?: number): any[] | null;
export declare function writeGlobal(namespace: string, list: any[]): void;