probably would have been fine, with hindsight, and much simpler. The use of
Twisted is a very questionable convenience, and the way zc.async uses
Twisted is not to be copied 99% or more of the time.
Gary
Thanks again and best regards,
Erik
2011/7/29 Gary Poster gary.pos
Hello Erik. As the author, I'll suggest that you move on to a ZODB connection
pool used by the usual Twisted-provided thread pool. zc.twist is maybe
interesting and maybe clever, but of very limited usefulness. I suspect it is
only used in zc.async, and that's probably as it should be. It's
, with hindsight, and much simpler. The use of
Twisted is a very questionable convenience, and the way zc.async uses Twisted
is not to be copied 99% or more of the time.
Gary
Thanks again and best regards,
Erik
2011/7/29 Gary Poster gary.pos...@gmail.com:
Hello Erik. As the author, I'll
On Dec 7, 2009, at 11:08 AM, Erik Dahl wrote:
...
Our slow loading object was a persistent with a regular list inside of
the main pickle. Objects that the list pointed to were persistent
which I believe means that hey will load separately. In general we
have tried to make our
Uh-oh, I'm implicated!
(see below)
On Jun 3, 2008, at 12:53 PM, Sean Allen wrote:
...
If you do that in gemstone, there is only one copy of Order B, no
matter
what variable in what dictionary you come at it from. And its drop
dead
simple.
I looked at implementing that with zodb
On Mar 20, 2008, at 11:04 PM, Sean Allen wrote:
I've been playing with this and I'm still having a disconnect 3 week
later.
1. I love the zc.relation stuff it answers one area of stuff I
hadn't even gotten to yet.
cool :-)
2. I'm just totally missing something
less cool. :-/
If I
Hi Kenneth.
First, make sure you do a transaction.begin() (or transaction.abort())
before you view your database for a given operation. This will sync
invalidations for a given transaction, even if it will only be a read
transaction, and reset the MVCC view.
The partial-view behavior
On Mar 10, 2008, at 6:34 PM, Kenneth Miller wrote:
Hello all,
I'm currently developing my application ontop of zodb/zeo, and
the idea of having the Zeo server the only single point of failure
still bothers me. My question is, has anyone thought of any
solutions for this. My idea was
On Feb 27, 2008, at 10:03 AM, Sean Allen wrote:
On Feb 27, 2008, at 5:33 AM, Laurence Rowe wrote:
Sean Allen wrote:
been looking for anything along those lines.
in particular, strategies and gotchas for how to store objects.
everything i've found is basically just a single type of object
On Nov 1, 2007, at 4:25 PM, Matt Hamilton wrote:
David Binger dbinger at mems-exchange.org writes:
On Nov 1, 2007, at 7:05 AM, Matt Hamilton wrote:
Ie we perhaps look at a catalog data structure
in which writes are initially done to some kind of queue then moved
to the
BTrees at a later
On Aug 2, 2007, at 9:33 AM, Jim Fulton wrote:
On Aug 2, 2007, at 7:51 AM, Chris Withers wrote:
Gary Poster wrote:
you can call cache minimize after a threshold.. maybe every 100
iterations.
sounds good, assuming you know you are not writing.
I've used this trick loads, especially
On Jul 19, 2007, at 7:11 AM, Tobias Rodäbel wrote:
Hi,
zope.app.keyreference-3.5.0_dev_r77018-py2.4.egg requires
ZODB3=3.9.0-dev-r77011
But there might be a caching problem within ZODB3-3.9.0 dev r77011,
my debug session tells:
On May 9, 2007, at 1:35 PM, Christian Theune wrote:
Hey,
my new buildbot just discovered this:
Failure in test test32 (BTrees.tests.testBTrees.FamilyTest)
Traceback (most recent call last):
File /usr/lib64/python2.4/unittest.py, line 260, in run
testMethod()
File
On May 9, 2007, at 1:40 PM, Gary Poster wrote:
On May 9, 2007, at 1:35 PM, Christian Theune wrote:
Hey,
my new buildbot just discovered this:
Failure in test test32 (BTrees.tests.testBTrees.FamilyTest)
Traceback (most recent call last):
File /usr/lib64/python2.4/unittest.py, line 260
Hi. ZODB does not currently work with Py2.5.
Gary
___
For more information about ZODB, see the ZODB Wiki:
http://www.zope.org/Wikis/ZODB/
ZODB-Dev mailing list - ZODB-Dev@zope.org
http://mail.zope.org/mailman/listinfo/zodb-dev
I assume you are more interested in seeing if you can get someone to
raise a compelling -1 than in hearing a chorus of +1s. But FWIW, +1
in getting rid of versions. It sounds like it would simplify the
code significantly, which would be its own feature.
Gary
On Feb 11, 2007, at 7:29 PM, Manuel Vazquez Acosta wrote:
My scenario is akin a consumer-producer with shared buffer.
Consumers pull items from the buffer whilst producers put items in
the buffer. The buffer is an OOBTree along with an IOBTree which
gives serial numbers to the keys of the
On Feb 12, 2007, at 10:01 AM, Manuel Vazquez Acosta wrote:
Hi Gary,
Although the shared buffer indeed has a queue-like interface
there's a catch for my needs. I need that pull method to retrieve
the item in the head and to move the head forward, and not to
remove the item from the
On Oct 5, 2006, at 9:37 AM, Jim Fulton wrote:
Russ Ferriday wrote:
Do you have some favorite documents that you would point me to as
most accurate or up to date?
No, because I haven't used ZODB documentation much myself. :)
Decent clues will be enough to get started.
- Doc in test or
On Jul 26, 2006, at 12:52 PM, Chris McDonough wrote:
FWIW I believe by default at least, open ZODB connections are tied
to the thread which did the opening (they are returned to a pool
when closed and reused, possibly in another thread). And indeed
each connection does have a cache;
On Jun 26, 2006, at 3:16 PM, Florent Guillaume wrote:
On 26 Jun 2006, at 21:11, Robert Gravina wrote:
On 2006/06/27, at 3:49, Benji York wrote:
Robert Gravina wrote:
I just tried loading a persisted object interactively and
noticed that although the _p_oid doesn't print out as anything
On Apr 29, 2006, at 6:08 AM, Christian Theune wrote:
Hi everybody,
the ZODB team is proud to announce a technical preview of a Blob
implementation for ZODB.
Hey.
This seems like there's no way that it will make it into the next
ZODB release, right?
I assume no one is using it in
On Mar 24, 2006, at 9:11 AM, Chris Withers wrote:
Hi All,
What happens if you call _p_deactivate() on a modified object but
before the modifications have been committed?
Do the modifications get lost or will they still be saved when the
next commit happens after the _p_deactivate()?
On Feb 3, 2006, at 9:12 AM, Florent Guillaume wrote:
Gary Poster wrote:
On Jan 26, 2006, at 10:16 PM, Gary Poster wrote:
I have some code that might be worth putting into ZODB.
There are three bits.
- Two flavors of persistent queue.
[...]
I'm a bit surprised there was so little
I have some code that might be worth putting into ZODB.
There are three bits.
- Two flavors of persistent queue. Both have a conflict resolution
policy to be about as lenient as I could make it. They don't expect
to ever hold multiple instances of equivalent values at the same
time.
On Dec 1, 2005, at 11:38 AM, Tim Peters wrote:
... I know Gary Poster gave a lot of thought to making pickles for
the timezone info in Zope3 efficient too.
For some definition of a lot of thought. :-) The pickle for
pytz.utc is now relatively small (though still adds a non-trivial
On Dec 1, 2005, at 12:04 PM, Tim Peters wrote:
Note that we have yet to use a new strategy for shrinking pickle
sizes: a
few years ago Python's pickle code grew support for extension
codes, a
registry of class/type names that _can_ be referenced by short (as
short as
2 bytes) new pickle
On Aug 5, 2005, at 6:20 AM, Julien Anguenot wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hi,
I would like to order the before commit hooks on a transaction by
being
able to specify an order for a subscriber at registration time. For
the
moment, they are called in the order
On Aug 5, 2005, at 2:33 PM, Tim Peters wrote:
[Julien Anguenot]
...
The order argument could be an integer with a default value to 0
added
to the registration method.
[Gary Poster]
I usually like the word 'priority' for this sort of value, rather
than
'order'. To me 'order' implies
On Jul 12, 2005, at 1:46 PM, Jens Vagelpohl wrote:
On 12 Jul 2005, at 18:17, Lennart Regebro wrote:
previous Zope version, which I used, was 2.6.1, but it was very old
version and
I decided to jump to 2.8.0. I took problems with autorefresh. What
can I do to solve
my problems?
If it
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