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I have deleted the file and uploaded a new file. The update time of the file has also changed. Why is this happening?
小伙看你根骨奇佳，潜力无限，来学PHP伐。
Is the download done through the Qiniu management interface? Or is it downloaded through the domain name access address?
The access address download may be cached, add query parameters and then download it to have a look
Qiniu has dns cache, you can just refresh it, or you can add ?v1 after the requested path, and it will be fine
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Is the download done through the Qiniu management interface? Or is it downloaded through the domain name access address?
The access address download may be cached, add query parameters and then download it to have a look
Qiniu has dns cache, you can just refresh it, or you can add ?v1 after the requested path, and it will be fine