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python question: sync big object tree between processes?
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fpemud
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Joined: 15 Feb 2012
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PostPosted: Mon Jun 17, 2013 11:45 am    Post subject: python question: sync big object tree between processes? Reply with quote

I want to sync a big object tree between two processes, the sync is one way, from proc A to proc B.
Changes to the object tree are small, frequent and in transaction.

How do I do this effectively?
In fact proc A is using zodb for object tree management and persistent.

The simplest solution comes into my head currently is to transfer delta of object tree.
Is there any lib to do that?

The two processes can be on same PC or different PC connected by network.
I want it be more effecient when on same machine.
So I must use socket in the different PC case, and switch to use shared memory in the same PC case?
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vaxbrat
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Joined: 05 Oct 2005
Posts: 512
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PostPosted: Fri Jun 21, 2013 9:21 pm    Post subject: you probably want to do message passing Reply with quote

You might want to look into a publish/subscribe message passing model with something like http://www.zeromq.org/ for the transport. Use this to notify object transactions from A to B.
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dol-sen
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Joined: 30 Jun 2002
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Location: Richmond, BC, Canada

PostPosted: Sun Jun 23, 2013 7:23 am    Post subject: Reply with quote

There is also dev-python/pydispatcher for passing info around.
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