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zopefoundation / ZODB

Python object-oriented database
https://zodb-docs.readthedocs.io/
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Can different ZODB versions be used with zc.zrs replication? Is ZODB 5.5.1 safe for Zope 5.10? #399

Closed georgpfolz closed 4 months ago

georgpfolz commented 4 months ago

This question is zc.zrs related, but as the zc.zrs repository is closed, I hope it's ok to ask it here:

With latest version of ZRS (3.1.0), I can use ZODB 6.0 as master but I have to use ZODB 5.5.1 or earlier as slave (https://github.com/zopefoundation/zc.zrs/issues/6). As far as I'm concerned, I'm fine with that, I only wonder if there are any caveats with:

So I wonder which of these choices is the right one:

  1. Replicating from ZODB 6.0 to ZODB 5.5.1
  2. Using ZODB 5.5.1 on both master and slave
d-maurer commented 4 months ago

Georg Pfolz wrote at 2024-6-22 08:01 -0700:

This question is zc.zrs related, but as the zc.zrs repository is closed, I hope it's ok to ask it here:

With latest version of ZRS (3.1.0), I can use ZODB 6.0 as master but I have to use ZODB 5.5.1 or earlier as slave (https://github.com/zopefoundation/zc.zrs/issues/6). As far as I'm concerned, I'm fine with that, I only wonder if there are any caveats with:

  • replicating across different ZODB versions (i.e. from 6.0 to 5.5.1)
  • using ZODB 5.5.1 with the newest Zope version (5.10)

So I wonder which of these choices is the right one:

  1. Replicating from ZODB 6.0 to ZODB 5.5.1
  2. Using ZODB 5.5.1 on both master and slave

When you look at CHANGES.rst, you see what changed in recent ZODB versions.

From my point of view, the changes do not seem to be important to your use case.

georgpfolz commented 4 months ago

When you look at CHANGES.rst, you see what changed in recent ZODB versions.

OK

From my point of view, the changes do not seem to be important to your use case.

Great! Thank you for clarifying