e in with a definitive
>answer.
The object cache only contains up-to-date objects when a transaction
starts.
ZODB will also raise a ConflictError when loading an object into the
cache for reading, if it has been modified since the start of the
transaction.
Toby Dickenson
[EMAIL PROTECTED]
On Mon, 5 Mar 2001 10:56:38 -0500, Tim McLaughlin
<[EMAIL PROTECTED]> wrote:
>Is there a hook for before the transaction is committed for objects which
>subclass Persistent?
__getstate__ ?
But why would you want that?
Toby Dickenson
[EMA
On Wed, 07 Mar 2001 09:49:09 -0500, Shane Hathaway
<[EMAIL PROTECTED]> wrote:
> Invoking C from Python
>is fast, but invoking Python from C apparently requires a lot of work.
Invoking a python function from anywhere (even from another python
function) requires alot of work.
To
>
>Does this means some conflict between the python2 and
>the 1.52 from zope?
>
>Can somebody give me instructions to solve this?
>
Sounds like python 1.5.x binary is picking up the python 2.0 library
Toby Dickenson
[EMAIL PROTECTED]
On Fri, 16 Mar 2001 08:48:09 -0500, Edmund Goppelt
<[EMAIL PROTECTED]> wrote:
>Could the author have meant to write 'Exception' here instead of 'Except'?
>
>I am running Zope 2.3.0 stable.
The current cvs has this changed to 'except Attribute
instead of the bundled one.
That wont be quite enough on win32, not sure about other platforms.
The binary release contains extensions that link with the python15.dll
They need to be recompiled for 2.0, and will then link with
python20.dll
Toby Dickenson
[EMAIL PROTECTED]
_
aking a copy of your content you will need to use
VirtualHostMonster (or something similar) so that they refer to the
final server.
Toby Dickenson
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today, but that doesnt mean that it is wholly
irrelevant to me.
This morning (for me) zope-dev had 87 new messages in 29 threads. Do
people really find this to be too many?
Toby Dickenson
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h
fore that I would be more than happy for these to be
rolled into the Zope core, and they do cover a large part of your CSN
problem (plus several related problems that you havent realised
yet. ;-)
Toby Dickenson
[EMAIL PROTECTED]
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On Thu, 03 May 2001 17:14:28 +0100, Toby Dickenson
<[EMAIL PROTECTED]> wrote:
>On Thu, 3 May 2001 11:45:58 -0400, "Andreas Jung"
><[EMAIL PROTECTED]> wrote:
>> http://dev.zope.org/Wikis/DevSite/Proposals/HTTPContentNegotiation
>http://www.zope.org/Members
> -Original Message-
> From: Andreas Jung [mailto:[EMAIL PROTECTED]]
> Sent: 03 May 2001 20:23
> To: Toby Dickenson
> Cc: zope-dev
> Subject: Re: [Zope-dev] ANN: Proposal ContentNegotiation
>
>
>
> From: "Toby Dickenson" <[EMAIL PROTECTED
27;t,
>'cos they're python builtins, which I'm pretty certain was the problem
>in my case...
That is exactly correct.
Toby Dickenson
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ionally in IE, but very very rarely and
control-F5 (to refresh the page) always makes it go away.
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standard
unicode support, when it arrives, will be based on these patches.
(ps, Ill be releasing an updated patch for Zope 2.3.2 in the next few
days)
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iable, and efficient (given that
conflict/retries are rare) then I dont understand the motivation
> But I want it to be more reliable, especially so that
>ZCatalog can be used in ZODB applications outside Zope.
Is it because other non-Zope applications might not be so proficient
at perfo
s that Zope's xml-formatted export doesnt handle
unicode objects. If you find anything that doesnt work, it will have
to be fixed for Zope 2.4, and it shouldnt be too hard to back-port
that fix into 2.3.x.
Having said that, Python's garbage collector *needs* support from
container o
tice
>> in zope?
Context-based programming is usually wrong, but not always. If you
explain what you are trying to achieve then we may be able to point
out a better alternative.
(some early drafts of the Zope book encouraged context-based
programing in scenarious where it was quite dangerous; Im
On Thu, 31 May 2001 10:36:55 -0400 (EDT), Shane Hathaway
<[EMAIL PROTECTED]> wrote:
>On Thu, 31 May 2001, Toby Dickenson wrote:
>
>> On Thu, 31 May 2001 10:03:31 -0400 (EDT), Shane Hathaway
>> <[EMAIL PROTECTED]> wrote:
>> >Right now ZCatalog randomly gen
onflict on the root catalog object, but
not on the index BTrees.
Toby Dickenson
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tor)
StandardCacheManager's HTTP implementation is easy to use, but a
little simplistic. You can achieve more (with only a little effort) by
handling the caching headers yourself.
Toby Dickenson
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e to stream data to the client.
>
>Can anyone help to solve this problem ??
How are you gluing apache to zope? if apache is proxying http (as with
mod_proxy, or mod_rewrite) then it works fine.
Im not sure about pcgi...
Toby Dickenson
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ttp://www.zope.org/Wikis/DevSite/Projects/ZEOReplicatedStorage/SurviveTotalLossOfStorage>
Until then, http://www.it.uc3m.es/~ptb/nbd/ looks promising. Has
anyone tried FileStorage over a network block device?
Toby Dickenson
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p of cvlass instances. This must have a significant memory footprint.
Toby Dickenson
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linked below. I
have commercial products that use this Unicode support, so you can be
sure it will be maintained for some time. Further, DC have committed
to providing similar in Zope 2.4.x and there is a good chance that it
will be based on these patches.
http://www.zope.org/Members/htrd/wstring
ibe this type of license clause, however I wonder
whether you (personally, or as an organisation) really find it to be
'obnoxious'?
Personally, I am *happy* to respect clause 4.
Toby Dickenson
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> > >and the 'obnoxious advertising clause'
> > >seemingly puts a stop to it..
> >
> > I understand that 'obnoxious advertising clause' is the
> phrase used by
> > the FSF to describe this type of license clause, however I wonder
> > whether you (personally, or as an organisation) really find it
t ZCatalog. A recent release (im not surwe which,
2.3.2?) has a new BTree implementation that reduces bloat by modifying
fewer buckets (it also doesnt have the column showing index size)
Toby Dickenson
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gn goal.
I thought I observed that characteristic had changed in a recent Zope
release... hmmm, Ill take a look.
Toby Dickenson
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re some deeper problems I am not aware of?
Toby Dickenson
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> I think it has changed for FieldIndexes.
Yes, from UnKeywordIndex.py
newKeywords = getattr(obj, self.id, ())
> You can now make
> the distinction
> between "doesnt have that attribute" and "attribute is one of
> [None, '', [],
> ()]" within a Field Index.
Reviewing UnKeywordIndex.
>> OID: 37ab8 len 39336 [BTrees.IOBTree.IOBTree]
>> OID: 3c610 len 33864 [BTrees.IOBTree.IOBucket]
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cared off by the problem reports in the list
archives.
IMO fixing this may be worth a little breakage.
Toby Dickenson
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beyone what it is good for; that is
trivial document templating.
dtml-in is a particularly bad at polluting the dtml namespace (which
is particularly serious because you have only got one of them)
Toby Dickenson
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>It makes the presentation of database queries really easy
Mmmm, too easy.
Toby Dickenson
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tence C API?
--
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Want a job like mine? http://www.geminidataloggers.com/jobs for Software
Engineering jobs at Gemini Data Loggers in Chichester, West Sussex, England
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Is it worth adding it as a new parameter to
these functions?
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stand a chance of beind processed
> normally.
I havent seen a mention of ulimit or autolance earlier in this thread They
are mostly adequate protection against the work problems.
--
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e as many zopes, each with
half as many publisher threads. (assuming you already have zeo, of course)
> I'm also keen for users to nto
> get MemoryErrors, but to just have their request take much longer ( cache
> thrashing and the like...)
use squid, and it will retry the request.
On Thursday 11 September 2003 03:03, John Barratt wrote:
> I think ghosts
> are only 'removed' after a restart,
fyi, ghosts are removed from memory using reference counting.
--
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On Thursday 25 September 2003 11:51, Chris Withers wrote:
> Hmmm, does _p_deactivate() clear the contents of the object's _v_
> variables?
Yes
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On Friday 26 September 2003 09:32, Chris Withers wrote:
> Toby Dickenson wrote:
> > On Thursday 25 September 2003 11:51, Chris Withers wrote:
> >>Hmmm, does _p_deactivate() clear the contents of the object's _v_
> >>variables?
> >
> > Yes
>
> Then
tried to the beta release. If you've got a current CVS checkout of Zope
>
> I'm unable to test because of the Python 2.2 requirement :-(
Im in the same position, also :-(
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On Friday 03 October 2003 15:33, Chris McDonough wrote:
> Jim is keen to get an audit going quickly before a 2.7
> final release, and the audit would be performed against Python 2.3.2.
Does anyone else have an interest in blessing Zope 2.6.x with Python 2.2/2.3 ?
--
Toby Dic
omething similar that guarantees it will _not_ be cleared until the end of
the transaction?
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(Relate
On Friday 10 October 2003 18:34, Dieter Maurer wrote:
> Toby Dickenson wrote at 2003-10-10 07:54 +0100:
> > ...
> > A while ago there was a discussion on zodb-dev about _v_-like attributes
> > that would be automatically cleared at the end of a transaction. Do we
>
t just at transaction
> > boundaries.
>
> Agreed. Are there any situations, apart from the already discussed CMF
> skindata, where this currently isn't the case?
every database adapter?
(I guess, but havent checked)
--
Toby Dickenson
___
at transaction
boundaries. This is desirable from a cache management point of view.
Apart from the most trivial cases, it would allow _v_ attributes to disappear
at random. Its a similar problem to the one that makes it hard to write an
optimiser for py
immediately thereafter.
If you are seening that then I think you need a bigger cache. And possibly
fewer publisher threads.
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gt; I'm gonna go with that last one if nobody complains.
consider this a complaint. character encodings should be applied at zopes
boundary, not in the middle of its processing.
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http:/
On Thursday 23 October 2003 08:07, Chris Withers wrote:
> Toby Dickenson wrote:
> > Apart from the most trivial cases, it would allow _v_ attributes to
> > disappear at random. Its a similar problem to the one that makes it hard
> > to write an optimiser for python code, and
On Tuesday 21 October 2003 18:08, Jens Vagelpohl wrote:
> Just a quick heads-up:
> Then we will start restoring the data
> from the old drives.
That makes me nervous. How will you know that the sources in cvs havent been
compromised?
--
Toby
On Thursday 23 October 2003 18:52, Chris Withers wrote:
> What in the ZODB cache or other ZODB code could be causing _v_ variables to
> stick around after they've been set to None in their containing objects?
reference cycles
--
Tob
+1 on starting a prototype now, but I cant see this landing before 2.8.
This is going to break every use equivalent to getattr(some_object, id). Its
not obvious to me how this can be cleanly resolved in zope 2.
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nagement) so we hit all these problems early
enough to fix the damage cheaply.
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Why doesn't absolute_url(1) include a leading slash?
> I don't think I've ever seen a use of absolute_url(1)
> that didn't have to add the slash. What was the rationale
> originally?
Because
/
looks nicer than without the slash
?
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Toby Dickenson
_
On Tuesday 09 December 2003 16:24, Evan Simpson wrote:
> Summary: absolute_url(1)
Looks good.
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t headers - I forget the details.
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x27;ll skip it
> and live with my Formulator hack solution.
Can you point me to a desicription of this hack please.
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ted, put your __del__ on a non-persistent sub object.
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On Monday 26 January 2004 12:08, Thyb wrote:
> What could be the problem?
That indicates that you are out of memory. If that doesnt seem right, maybe
your storage is corrupt in a manner that the unpickler interprets as
something with a huge memory footprint.
--
Toby Dicken
On Monday 26 January 2004 17:22, Tim Peters wrote:
> It's actually that the number of __del__-resurrecting objects *plus* the
> number of non-ghostifiable objects in cache is larger than the cache target
> size, right?
Yes, Right. That is more achievable than I thought.
--
On Tuesday 27 January 2004 19:08, Tim Peters wrote:
> Maybe Toby remembers which release(s) of ZODB the
> current cache implementation first appeared in
Zope 2.6
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unchanged. Any of these troublesome objects that move themselves
to the top of the LRU list *during* the scan will end up *after* the scan
terminator node, and therefore do not get rescanned.
This works for me on 2.6, which is the only branch Im set up to use at the
moment.
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Before creating a session, check the size of the ZRendezvous backlog. might
work.
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your cache between publisher threads on different Zope instances.
(my apologies if this is obvious)
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es for a single instance...
one of them is the supervisor process that restarts the main zope process if
it crashes.
the others are all threads of one process. one main medusa thread, and 4
publisher threads.
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cussed on the list
> before; basically do away with the Medusa request queue altogether and
> use listen()'s backlog instead.
Last week you were keen that medusa keep processing requests so that it can
return a 503 error quickly. I guess your view on that requirement has
orted now.
I have applications that send emails in error handlers. MailHost isnt
transactional today, but Ive always wanted it to be.
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On Monday 15 March 2004 12:59, Darshan Preet Singh Manku wrote:
> file = 'C:\tmp'
try 'C:/tmp' or 'C:\\tmp'. unless your file name really does contain a tab
character ;-)
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ber of threads. Reducing the
number of worker threads lets you increase the per-thread cache size.
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(Related
that parameter now ;-)
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good advice.
> None of the above components handles Unicode in this way, but it seems to
> be how the Unicode support in Zope 2 was meant to be used.
That is correct.
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ce (either in
a filesystem or zodb database). Can you give some examples?
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any of that is a benefit to you, and Folders arent the only kind
of ZODB container. I suspect you would be better off directly using a BTree
of some kind.
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http://mail.zope.org/mailman/listinf
sted-proxies" in the zope configuation file.
and you mean X-FORWARDED-FOR, not -FROM, right?
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change suggestions. In particular, my notes on using squid with
zope, and the changes I originally drafted for the Zope Developers Guide on
using unicode in Zope.
Is there now a more approporiate place to hold this documentation where it can
be maintained?
Thanks in advance,
--
Toby
s... .good.
> self._setObject(id, ad)
You add the new object to the folder. The folder calls
ad.manage_afterAdd (or whatever its called), which in the case of
CatalogAware calls index_object.
Everything looks right to me. The catalog should contain the real
values.
Toby Dickenson
[EMAIL PR
return ''
! REQUEST = re.compile('([^ ]+) (?:[^ :?#]+://[^ ?#/]*)?([^ ]+)((
HTTP/([0-9.]+))$|$)')
def crack_request (r):
m = REQUEST.match (r)
Toby Dickenson
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been closed.
I think it makes sense that Zope should replace sys.stderr with an
object that sends messages to zLog, however zLog itself sometimes
wites to sys.stderr.
Any thoughts on the right way to fix this?
Toby Dickenson
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caller. This makes it very easy to open
a security hole. HTMLFile should be avoided unless you have a very
good reason to need it.
(there was a full description of the potential security hole in the
Collector)
Toby Dickenson
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is possible to separate the two using syslog
rules.
Am I missing something?
Toby Dickenson
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(Related
ahead and get the
>bootstrap group (under ten, selected by us) going? I'd like to avoid
>making them sign and mail an agreement, then do it again if there's
>substantive changes.
Yes, I think it is close enough to get started.
Toby Dickenson
[EMAIL PROTECTED]
___
> I'll admit that I don't know. The ZLogger module makes some
> noise about
> syslog, but I dont even know if and when that module is used
> (as opposed
> to the zLOG module).
It is actually always used unless Zope is started read-only. Its not easy to
follow *how* this happens - and I am st
y clause. If one half-owner
were to make the source available under a different license without
such a clause, would the other half-owner be liable too?
Toby Dickenson
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On Mon, 1 Oct 2001 20:53:00 +0200, Jerome Alet <[EMAIL PROTECTED]> wrote:
>On Mon, Oct 01, 2001 at 04:14:47PM +0100, Toby Dickenson wrote:
>>
>> A question for all syslog users; is it ever useful to send access logs to
>> syslog? (I can't think of good reaso
as is? Did you measure ratios (between the two
storages) of time per indexing operation, or ratios of disk blocks
transferred per indexing operation?
Toby Dickenson
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current behaves the same as DTML calling
PythonScript, pure python functions, extension class functions, or an
external method.
Toby Dickenson
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proposals that are not aligned with
current zope.com project.
I thinks thats true of fishbowl projects, and the second of true of
smaller collector-hosted issues too.
Toby Dickenson
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.
>The opening of the CVS
>is a good starting point but I would like to see more people contributing.
So far it really does appear that nothing will happen about this
particular issue until it is needed by a zope.com consulting project.
If there is anything more that I can do then s
it after that time (call SQL and print
>> data via TAG).
Yes, the SQL driver abstraction layer is slower than it could be.
Toby Dickenson
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it.
> And setting
>__allow_access_to_unprotected_subobjects__ does not help much either
You set this on the Y?
in what way does it not work?
Toby Dickenson
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ink this
is a bug
As I understand it, that package is designed to leave cyclic garbage
around under the assumption that python's garbage collector will break
the cycles. Early versions of bytecodehacks broke the cycles manually,
at a great performance cost.
Toby Dick
s sense for the simple virtual-hosting scenario of
one-folder-per-virtual-hosts, however what you suggest cant be
achieved in the general case.
Given an arbitrarily complicated set of rewrite rules, the concept of
'Site Root' is not well defined.
Its called VirtualHost*Monster* for a reason ;
On Wed, 19 Dec 2001 06:07:00 +1100, Anthony Baxter
<[EMAIL PROTECTED]> wrote:
>For me, I run the ZEO server without GC (because that stops the stomped
>stack bug killing the ZEO server)
Do you have reason to believe that this bug can affect the ZEO server?
that would be very
ng? I thought I needed something
similar at one time too, but the non-blocking options are probabnly
better.
If you want non-blocking, File objects use RESPONSE.write which is a
good start for rolling your own implementation.
Toby Dickenson
[EMAIL PROTECTED]
_
uld you include self?
But what if you were defining an interface as a Python class, with the
target language being . Would you include
self?
I think my conclusion here is that using python classes to define
interfaces may be counterproductive.
Toby Dickenson
[
python classes to define
>> interfaces may be counterproductive.
>
>It may be the best we have (it's best understood by the target development
>audience)
As a product author I thought I *was* the target audience.
>..[1] http://python.sourceforge.net/peps/pep-0245.html
A good r
can do this (and has done for ages). Support in squid has
stalled (http://devel.squid-cache.org/projects.html#te). Although I
still think this is the way of the future, I suspect the short-term
advantage of content-encoding the way you implemented it may be an
advanatge for longer than I origi
oding support to Zope is a good thing only if
your front-end proxy does not support on-the-fly Transfer-Encoding. I
think apache does, but squid does not.
Toby Dickenson
[EMAIL PROTECTED]
___
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On Thursday 28 February 2002 3:00 pm, Brian Lloyd wrote:
>Paul sent a note to zope-coders some time back fishing for
>some feedback regarding planning for a Zope 2.6 (excepted):
>> I propose that planning for a 2.6 focus on the following thoughts:
>I wholeheartedly agree that 2.6 needs to be sig
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