History for DifferentClientsOneZSS

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From the <a href="http://www.zope.org/Products/ZEO/ZEOFAQ">FAQ</a>:



                     """For instance, with ZEO you can run different versions of the
                     application server on different machines or ports. You might have a
                     public version that has all the management facilities actually
                     removed from the code to prevent login. Alternatively you could
                     bring up a test version that was running new code, ensure that it
                     works, then roll the changes in process by process."""


When is it safe to have two clients that share the same storage
server, but interact with it in different ways?  What ways are there
for this to be done?

Is the answer just "make sure every client writes to the database
in ways that the other clients can handle, or one client will
mess up the others", and "make sure every client can understand
the database, even if they might be looking for different things
when they read"? -<a href="http://www.zope.org/Members/karl">karl</a>