redis分佈式鎖實現,setnx,nodejs版本

const redis = require('ioredis');
const clienId = Math.random() * 100; //模擬客戶端Id
const lockKey = 'testKey'
try {
    const result = await redis.setnx(lockKey, clienId, 'EX', 10); //防止死鎖,10秒
    if (result == 0) {
        return '系統繁忙!';
    }
    //省略去庫存等業務操作
} catch (error) {

} finally {
    if (clienId == await redis.get(lockKey)) {
        await redis.del(lockKey);
    }
}