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Problem with .zip files


Oblivoguy

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I have see caching problems like this when using Opera or Google's Chrome (which is why I no longer use them). If something gets outta whack for a particular download or page, the browser keeps it that way in cache form. So if you download a file that is incomplete, then a subsequent try might give you that same incomplete file (or page) from the local cache rather than trying to actually pull it from the Internet again.

 

Typical situations that give zero-length files are those uploads that are brand new. If a 50 MB file is uploaded, it only exists on the primary server even though you are given options to download from mirror sites. A nightly job will distribute files to mirror servers but typically, that is done on-the-fly by a member clicking the file and picking a mirror that does not have it. When this occurs, the mirror site sends a request to the primary site and begins copying it from the primary to the mirror which might take a few seconds. Once the site-to-site transfer is complete, the mirror site will then send the file to you. However, if you are impatient and click off the page, the file remains as a zero-length file and since transfer never began, the browser might pull that empty file next time rather than trying to obtain the correct one from the Internet. (ya, that was long-winded).

 

But, to get around the file and page caching issues, you have to clear your cache frequently...which is annoying...or tell your browser not to cache sites that it does not work well with it.

 

LHammonds

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