> For the complete documentation index, see [llms.txt](https://couchbase.shujuwajue.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://couchbase.shujuwajue.com/shi-yong-node-js-ke-hu-duan/ji-ben-cao-zuo/guo-qi-shi-jian-cao-zuo.md).

# 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);
});
```