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From Chris Albertson <albertson.ch...@gmail.com>
Subject Re: svn update or rsync - which is best to update live files
Date Sun, 27 Feb 2011 05:13:06 GMT
OK,   There is one way that works.  I'd suggest using it.

Most server OSes now have some way to make a virtual hoist.  Solaris
has zones, Linux has xen and there is VMware.  The idea is that you
build the new updated web site on a new virtual host.  and then you
test it.  Once you like the tst results you swap IP addresses.     You
don't really want to go live with changes that are untested.  The IP
address is "atomic" in that the entire site goes live at once.

BTW I've always liked the way Solaris does this in that you can have
many "zones" each with their own IP address and file system but there
is only one instance of the operating system running on the hardware.
 I always thought it a waste to have multiple copies of the same
software in RAM, Sun solved that problem well.

-- 
=====
Chris Albertson
Redondo Beach, California

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