app Cache BSP SAP

Hi,

I have an Application with the files housed in BSP. My app only have Html, css and javascript files and I use Html5 Cache Manifest for use the app without connection.

My problem is that sometimes, the Server Cache is not working correctly and I don´t know why. Sometimes download all modified files and sometimes not.

Could anybody tell me how it work? Or the correctly configuration for cache?

Regards.