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Mailing lists functionality
by Dan Stowell 20 May '02

20 May '02

Hi all, I'm new to this list so I apologise if I'm repeating old questions (though I've searched the list archive already). Does Zope provide the ability to have dynamically-generated email distribution lists? Does it provide the ability to maintain distribution lists at all (and to actually send the emails)? We don't have Zope installed, but it may be a possibility, and I'd like to know if it could be arranged that staff could sign themselves up to various email announcement lists while browsing a Zopey intranet. Many thanks in advance. Dan Stowell --------------------------------------------------- Faculty Information Support Officer (Life Sciences) http://www.ucl.ac.uk/is/fiso/lifesciences/ Webmaster, Faculty of Life Sciences, UCL http://www.ucl.ac.uk/lifesciences-faculty/ Room G29, Drayton House, 30 Gordon Street, London Tel: +44 (0)20 7679 5472 Email: d.stowell(a)ucl.ac.uk Fax: +44 (0)20 7679 5494 ---------------------------------------------------

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Re: [Zope] Optimisation fun and games
by Anthony Baxter 20 May '02

20 May '02

>>> Richard Jones wrote > > Indeed. Do you use ZPT? If so, join the lets-optimise-ZPT campaign ;-) > > Nope, nothing quite so new-fangled as that... large amounts of the dtml have > the old dtml syntax too :) I'd been considering ZPT for some time, but the recent "it's performance sucks" discussions have led me to say "maybe later". We've got enough hassles with screwing performance out of the system as it is right now. (and way, way, way too much to do to spend on tooling up for a major effort on making ZPT work faster). Anthony -- Anthony Baxter <anthony(a)interlink.com.au> It's never too late to have a happy childhood.

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sessions newbie
by Roman Bogoyev 20 May '02

20 May '02

Can someone please point me in the direction of tutorials/documentation/anything related to sessions transcience temporary folders and how to use them for session tracking? Thanks, Roman. -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Roman Bogoyev, Computer Systems Manager, email: roman(a)maths.uwa.edu.au UWA Maths, 35 Stirling Hwy, Crawley, phone: +61 8 9380 3379 Western Australia 6009 fax: +61 8 9380 1028

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Redirecting with Parameters
by Daniel.Dunbar 20 May '02

20 May '02

Hi I'm trying to redirect a client request. I'm using the RESPONSE.redirect ('URL') function and it works fine. I have however parameters in a form which needs to be sent along to the redirection page. This page is an intermidiate page for pages that load slowly i.e. a page which reads 'please wait ...' The parameters are therefore different from REQUEST to REQUEST. I appreciate your help on this. Thanks Daniel ********************************************************************** Symbian Ltd is a company registered in England and Wales with registered number 01796587 and registered office at 19 Harcourt Street, London, W1H 4HF, UK. This message is intended only for use by the named addressee and may contain privileged and/or confidential information. If you are not the named addressee you should not disseminate, copy or take any action in reliance on it. If you have received this message in error please notify postmaster(a)symbian.com and delete the message and any attachments accompanying it immediately. Symbian does not accept liability for any corruption, interception, amendment, tampering or viruses occuring to this message in transit or for any message sent by its employees which is not in compliance with Symbian corporate policy. **********************************************************************

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Re: [Zope] Optimisation fun and games
by Hannu Krosing 20 May '02

20 May '02

On Mon, 2002-05-20 at 12:53, David Burton wrote: > If you make the objects catalog themselves either automatically or > manually, then you can retrieve their ID and/or Title - you just > need to make sure that the > > ZCatalog is configured to store that as metadata. > The way ZCatalog works is to actually store a copy of the metadata > itself, so when you loop through the ZCatalog you're not actually > accessing the objects themselves, but ZCatalog entries that store > various bits of information about the objects they represent. > But this does not explain the 10 to 1 speedup when using for item in subfolder.objectValues(): vs. <dtml-in "subfolder.objectValues()"> as they _both_ use subfolder.objectValues() -------------- Hannu

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Re: [Zope] Optimisation fun and games
by Anthony Baxter 20 May '02

20 May '02

>>> Bakhtiar A Hamid wrote > 5 - squid. throw in squid and stuff will be served much much faster. off > course, the pages need to be cacheable i.e with at least Expires field, or > better yet put out the necessary cache headers. This only helps if your pages are mostly static, or mostly the same for each user. Many/most of our pages are highly dynamic, this makes a front end cache a bit exciting. For RAM caching, we use a whole pile of different values as keys - languages, partner, that sort of thing. The sidebar on www.ekit.com is ram cached - right now, the ram cache has 320 different sidebar entries. Other things I found that helped (digging into the memory here): avoid dtml-tree. It _seems_ neat, but it's a total time sink. work out which SQL methods are getting hit, and when, and cache them. Anthony -- Anthony Baxter <anthony(a)interlink.com.au> It's never too late to have a happy childhood.

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Zope with w3m
by Heimo Laukkanen 20 May '02

20 May '02

Zope seems to have problems with w3m -- the text browser. Atleast I get following tracebacks all the time: Zope Error Zope has encountered an error while publishing this resource. Error Type: ValueError Error Value: invalid literal for float(): =1.0  Any ideas where to find more info? -huima

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Re: [Zope] Optimisation fun and games
by Anthony Baxter 20 May '02

20 May '02

>>> Chris Withers wrote > Richard Jones wrote: > > > > 2) Two apache frontends using FastCGI to the ZEO clients. > > Is FastCGI doing you any favours here? Have you tried ProxyPassing? ProxyPass - bleah. I don't know why people keep using this. We used to, and it caused no end of pain and angst. From the weird and crappy interactions with rewrite rules, the poor error handling, the time spent debugging it... fastcgi is much much more robust, for us. Anthony -- Anthony Baxter <anthony(a)interlink.com.au> It's never too late to have a happy childhood.

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permission, roles, security question
by Dirk Datzert 20 May '02

20 May '02

Hi, I'm working on the following problem: A user is authenticated in a user folder and has the following roles: Anonymous (can, should a authenticated user have the role anon ?) Authenticated, Manager, some others In the permission of 'View' I will do the following: permission not acquired permission for Anonymous is disabled permission for Authenticated is not vissible (is that correct ?) permission for Manager, some others are enabled Will the 'View' permission enabled or disableed on the affecting roles ? Anonymous disables the 'View' permission (or does it mean Anonymous doesn't enables 'View' permission ?) Manager enables the 'View' permission. Regards, Dirk

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Optimisation fun and games
by Richard Jones 20 May '02

20 May '02

We (http://www.ekit.com/) have a popular website, and it's hit fairly hard (around 550k hits since the start of May, and with the summer holidays just starting, we're expecting it to skyrocket). I've therefore been working on ways to get Zope to go as fast as possible. Here's some hints for others who are running (or are expecting to run) high-volume Zope sites: 1) ZEO clients - we have about 9 of them, spread over a number of CPUs. We'll be putting in some more real soon. 2) Two apache frontends using FastCGI to the ZEO clients. They have an on-disk cache which serves up images (using rewrite rules to trap image URLs before they are sent to Zope) meaning Zope can do more important stuff than serve up static binary files. This is currently in testing and halves the average page load time. We don't have a real loadbalancer set up for the apaches, we just serve up different domains (we have many) from each. Watch the max number of connections per apache though - we've had to up it several times. 3) Several uses of RAM caches in Zope - the stylesheet, the sidebar HTML chunk and the front page content HTML chunk. Use the CallProfiler to isolate calls that change very little between users. RAM cache those. 4) CallProfiler'ed up the wazoo. Lots of CallProfiler analysis and fixing of hotspots. We managed halve our average page load time just doing this. Just thought this might be interesting :) One very interesting thing to note though is that the webmail part of our service is done in PHP. It's running on the same machines as the apache frontends. It doesn't seem to struggle at all. Not that we'd ever dream of writing something as complex as ekit in PHP :) Richard

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