# 过期时间操作

## 检索文档并设置失效时间

失效时间单位是秒

```javascript
bucket.getAndTouch("xiaoming",4, function(err, result) {
    console.log(result);
});
```

console打印出来获取的数据，4秒钟之后数据自动删除．

另一个方法：

```sql
bucket.touch("xiaoming1",60, function(err, result) {
    console.log(result);
});
```


---

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If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
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```

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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.