[Twisted-Python] Backup Agent
radix at twistedmatrix.com
Mon Feb 16 23:57:04 EST 2004
Michal Pasternak wrote:
> David A. Leedom [Mon, Feb 16, 2004 at 10:03:37AM -0500]:
>>2. What would be the best approach using twisted to transmit a file
>>system catalog across the local wire. I was playing with some remote
>>procedure calls over the weekend that seemed to work. I am thinking I
>>could create a class that would gather the local file system and send it
>>over the wire as one lump.
> Remote procedures have limit of 640 KB for their parameters (because "640 KB
> should be enough to anyone"). You should use Pager and Collector.
> >>3. If I am going to transmit a backup file (<500meg) over the wire to
>>another local computer what is the best Twisted approach to take?
> See above. Also, please remember, that memory issues matter. If you're
> paging the data (send small chunks), you should save them on the backup
> server, as they are received. If you are transfering a big file, keeping all
> the data received in some buffer is a bad idea.
PB probably isn't good for massive file transfer like that. I'd either
use an existing tool like rsync or http or whatever, or roll a trivial
protocol that just sends length_of_data:data.
Twisted | Christopher Armstrong: International Man of Twistery
Radix | Release Manager, Twisted Project
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