Does Sprint cache files?
Yes, but nobody seems to know for how long. If you are writing your own uploader and you change the data in a GCD file or change the data in the actual file you wish to transmit, the easiest thing to do is to change the file name. Sprint’s proxy caches both the GCD file and the target file. If you try to test a file and forget to upload it and Sprint’s servers got a 404 error, then you will not get good results by just uploading the file and trying again. Sprint’s servers will remember that it got a 404 error and won’t try again. It’s a royal pain in the butt, however it has an easy workaround. Rename both the GCD file and the target file each time you change either one. Then try to download it again. According to the Sprint Developer Forums, you can also use the “Cache-Control” header (eg. “Cache-Control: no-cache”) to prevent the proxy from caching the page. Some information about Cache-Control is available from AOL and mnot.net. Make sure that you do this before the problem hits —
