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  • Committer: Martin Pool
  • Date: 2006-01-13 09:57:13 UTC
  • mto: This revision was merged to the branch mainline in revision 1611.
  • Revision ID: mbp@sourcefrog.net-20060113095713-1fa5912229a3898e
Review updates of pycurl transport

Split them out into 

  bzrlib.transport.http             common base
  bzrlib.transport.http._urllib     pure python
  bzrlib.transport.http._pycurl     calls pycurl

Update to work with robert's nice transport test multiplexer.

Add PyCurlTransport.has() which does just a HEAD request; should be faster.

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doc/scalability.txt
 
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Scalability
 
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***********
 
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bzr needs to scale up very well: projects with tens of thousands of
 
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commits, tens of thousands of files, and tens of thousands of
 
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branches.
 
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We are concerned with both the big-O performance of the design, and
 
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the multiplicative factors of the implementation.  Both is important.
 
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For example, darcs, svn and arch use more than one inode per working
 
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file (pristine, id file, etc).  This is only a constant factor, but
 
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enough to more than double the space used by a typical tree.  We would
 
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like to avoid it if we can.
 
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From a early stage in development the features which do work should be
 
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tested on large trees.
 
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