[Checkins] SVN: z3c.blobfile/trunk/README.txt Described motivation for z3c.blobfile in a README

[Uwe Oestermeier]

Log message for revision 81712:
  Described motivation for z3c.blobfile in a README

Changed:
  A   z3c.blobfile/trunk/README.txt

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Added: z3c.blobfile/trunk/README.txt
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--- z3c.blobfile/trunk/README.txt	                        (rev 0)
+++ z3c.blobfile/trunk/README.txt	2007-11-10 14:11:18 UTC (rev 81712)
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+Blob File
+=========
+
+This package provides an implementation of zope.app.file.interfaces.IFile
+which uses the Blob support introduced in ZODB 3.8. It's main purpose
+is to provide an easy migration path for existing instances. For more
+advanced file implementations see zope.file and z3c.extfile. 
+
+The standard implementation in zope.app.file uses chunk objects to
+break big files into manageable parts. These chunks flow the server caches 
+whereas blobs are directly consumed by the publisher. The main difference
+between this blob implementation and the old zope.app.file implementation
+can be seen in a replacement of the chunk objects by Blobs.
+