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https://issues.apache.org/jira/browse/SLING-2707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13549773#comment-13549773
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Shashank Gupta commented on SLING-2707:
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>re: why would multiple connections actually help?  
like download accelerators which open multiple connections to server, download 
file chunks in parallel  and finally merge them. e.g 
http://www.internetdownloadmanager.com/

> If a client can fill its pipe, fine. But do we want the client to fill the 
> pipe of the server ? Probably not.
Client can upload multiple files in parallel and fill server's pipe. may be 
server has high bandwidth pipe.  imo, sling should have capability to accept 
parallel connections for same file and it can dictate to its clients whether it 
will accept multiple connections for same file.

>Yet, I wonder, whether this requires specialized (fat?) clients or whether 
>this is possible to be done from a vanilla browser.  Using HTML5 features is 
>fine for me.
HTML5 has File API which provides file slicing capability.
http://www.html5rocks.com/en/tutorials/file/dndfiles/
http://stackoverflow.com/questions/7594760/html5-file-api-slicing-or-not

                
> Support of chunked file upload into Sling
> -----------------------------------------
>
>                 Key: SLING-2707
>                 URL: https://issues.apache.org/jira/browse/SLING-2707
>             Project: Sling
>          Issue Type: New Feature
>          Components: General
>            Reporter: Shashank Gupta
>
> Use cases: 
> 1. Large file upload - With high speed internet connections, advent of cloud 
> and HD going mainstream, Sling should support large files (> 2GB) upload.
> 2. Fault tolerant uploads - Sling should provide capability to resume upload 
> from failure point. It should not require client to restart the complete 
> upload process. 
> 3. Faster upload: Sling should support its clients to initiate multiple 
> connection and upload file chunks in parallel. 

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