database - Truly virtual FTP -

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i looking set ftp server without connecting file system.

i want use database store of many large files on site each user have access to. because of number , size of files involved, files cannot stored on single server link based setup not useful.

i imagining ftp server act pass-through backend cdn stores files , checks remote database files present.

does system exist? if doesn't exist, open source ftp server easiest modify suit needs?

have looked @ jscape? costs money has capability


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