Currently I prefer to implement range post and the html5 or flex client should call an additional HEAD request with header info like "x-object-md5" or so to notify the server to calculate the whole file's new md5. For the post request just add "range" and "x-object-size" in the header.
2012/10/15 符永涛 <[email protected]> > Hi Tong Li, > > Thank you for your info. I'll consider the large object support. But I > prefer range post or append node for my requirement is not large object but > to improve user experience in the slow network environment. And I want to > use html5 or flex to upload to swift object store. > Currently I have two options, one is to use the large object support build > in swift (I don't prefer this since for me the segments is very small > there'll be too many segments which impacts the performance), another is to > implement range post or append mode myself, it is not hard to implement but > I encounter a problem of how to calculate the whole file's md5 without > impact the performance(if only partial file content changes). > > > 2012/10/15 Tong Li <[email protected]> > >> I assume that you want to upload some pieces and later upload more, >> then complete the object. If that is the case, you can use the large data >> object upload which allows upload small pieces, after some time, upload >> more, eventually upload a manifest file to complete the object. You can >> find more information here. >> >> http://docs.openstack.org/developer/swift/overview_large_objects.html >> >> Tong Li >> Emerging Technologies & Standards >> Building 501/B205 >> [email protected] >> >> [image: Inactive hide details for 符永涛 ---10/13/2012 05:30:54 AM---Dear >> swift experts, We're planning to use swift to implement an]符永涛 >> ---10/13/2012 05:30:54 AM---Dear swift experts, We're planning to use swift >> to implement an upload service. And we want to >> >> From: 符永涛 <[email protected]> >> To: [email protected], >> Date: 10/13/2012 05:30 AM >> Subject: [Openstack] does swift support resume upload? >> Sent by: [email protected] >> ------------------------------ >> >> >> >> Dear swift experts, >> >> We're planning to use swift to implement an upload service. And we want >> to know if swift support resume upload feature? Thank you. >> >> -- >> 符永涛_______________________________________________ >> Mailing list: https://launchpad.net/~openstack >> >> Post to : [email protected] >> Unsubscribe : https://launchpad.net/~openstack >> More help : https://help.launchpad.net/ListHelp >> >> > > > -- > 符永涛 > -- 符永涛
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