[Wikitech-l] Query-string normalization enabled on MediaWiki.org

[Ori Livneh]

Hello,

A short while ago, the SRE Traffic team enabled
 query-string
normalization for MediaWiki.org. This means that the caching layer
(Varnish, specifically) now rewrites the query string portion of request
URLs, so that query parameters are sorted by key. The re-written URL is
then used for the cache look-up and (if necessary) the backend request.
This improves the efficiency of the cache, since it allows
logically-equivalent requests with different URL forms to be served by a
single cache entry.

For example, this URL:
  https://www.mediawiki.org/w/index.php?title=Squid=history

Is re-written as:
  https://www.mediawiki.org/w/index.php?action=history=Squid

Care has been taken to make the sort stable for duplicate keys, and to
handle PHP array syntax (?foo[]=a[]=b) correctly.

MediaWiki.org is the first wiki that gets real traffic where this is
enabled. If you encounter any weirdness, please file a task
.
If everything looks good, we'll proceed with an incremental roll-out to
other wikis. This is tracked in T314868
.

Cheers
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Re: [Wikitech-l] Query

[Andre Klapper]

On Wed, 2019-01-23 at 17:00 +, bawolff wrote: 
> If you log into phab using your "wiki account" (e.g. via OAuth). You
> can still link your gerrit account, by going to your preferences in
> phabricator. This will make both accounts associated with your
> phabricator account.

Indeed. This If you'd like to do this, follow the steps in
https://www.mediawiki.org/wiki/Phabricator/Help#Creating_your_account

andre
-- 
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https://blogs.gnome.org/aklapper/



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Re: [Wikitech-l] Query

[Thiemo Kreuz]

You can link all your accounts via your user settings on Phabricator.

Except for a little confusion here and there I'm not aware of any
consequences of having different names on Wikitech (which includes
Gerrit) and Phabricator. I happen to have slightly different account
names myself.

Best
Thiemo

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Re: [Wikitech-l] Query

[bawolff]

Its totally fine for the accounts to be different. (As long as you aren't
intentionally using multiple accounts to confuse people, of course)

At worse, it might be a tad confusing, but that's totally ok. Putting a
note on your user page listing all your accounts is a good idea to prevent
confusion.

If you log into phab using your "wiki account" (e.g. via OAuth). You can
still link your gerrit account, by going to your preferences in
phabricator. This will make both accounts associated with your phabricator
account.

--
Brian
On Wed, Jan 23, 2019 at 4:53 PM K. Kaushik Reddy 
wrote:

> Hi everyone,
>
> It's been a long time, I'm back to work after a long holiday. I have one
> question to ask. I have different usernames for Gerrit account  and
> Phabricator account . Will that create any trouble while contributing the
> code?
>
> Best,
> K. Kaushik Reddy.
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[Wikitech-l] Query

[K. Kaushik Reddy]

Hi everyone,

It's been a long time, I'm back to work after a long holiday. I have one
question to ask. I have different usernames for Gerrit account  and
Phabricator account . Will that create any trouble while contributing the
code?

Best,
K. Kaushik Reddy.
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[Wikitech-l] Query

[Shikha Shree]

This is Shikha Shree, a B.Tech undergraduate in Electronics and
instrumentation discipline. I have participated in
FOSS Outreach Program For Women Round 8 -  Mediawiki

I have submitted my proposal on Wikidata Outreach under the mentorship of
Lydia Pintscher.
A draft of my proposal can be found at
https://www.mediawiki.org/wiki/User:Shrees1234/GSoC_2014_proposal

And my entire proposal can be found at
https://www.mediawiki.org/wiki/Project_Outreach


I know I am quite late to apply. But comments and direct email suggestions
are highly welcome.


Cheers,
Shikha
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[Wikitech-l] Query

[Rahul Mishra]

Hi,


I am Rahul Mishra,final year undergraduate and pursuing my B-Tech form 
Netaji Subhash Engineering College having majors Computer Sciences  
Engineering.


I am very much interested in the project of A system for reviewing 
funding requests[1] and proposed a draft titled A system for reviewing 
funding requests[2].


Please review my draft and please give your valuable advise, so that i 
can further improve my proposal




[1]https://www.mediawiki.org/wiki/Google_Summer_of_Code_2014#A_system_for_reviewing_funding_requests
[2]https://www.mediawiki.org/wiki/A_System_for_reviewing_Funding_Requests


Thank you,
Rahul Mishra,

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Re: [Wikitech-l] Query

[Tony Thomas]

Hi Rahul,
   It would have been more simple, if you could upload a patch to
pastebin and give the link here. Or you can upload the patch to gerrit, and
ask for help from other developers.
See: http://www.mediawiki.org/wiki/Gerrit/Tutorial

On Sat, Mar 15, 2014 at 7:51 PM, Rahul Mishra mishra_2...@yahoo.com wrote:

 54749


Tony Thomas http://tttwrites.in
FOSS@Amrita http://foss.amrita.ac.in

*where there is a wifi,there is a way*
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Re: [Wikitech-l] Query

[K. Peachey]

Could you please provide the patch in git diff format, or alternatively
straight into our git environment for even easier reviewing? (See
https://www.mediawiki.org/wiki/Gerrit for more info)



On 16 March 2014 00:21, Rahul Mishra mishra_2...@yahoo.com wrote:

 Hi,


 My name is Rahul Mishra, I am from Kolkata, India. I was working on a
 Annoying Little Bug, Bug 54749. And i have modified the source code of
 thumb.php the way as i thought it should be, but i am not sure of its
 working.

Proposed Patch: http://fpaste.org/85648/94892293/
(the additions are between line 111 to line
 118).

 Please have a look at the bug 54749, and help me understand, as what was
 aimed to achieved by debugging this bug and did i succeed in my attempt. If
 not, in what direction should i work further to fix it.


 Thank you!!
 Rahul Mishra.

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[Wikitech-l] Query about GSoC 2013

[Siddha Ganju]

Hi! This is Siddha, an open source enthusiast and I really want to work on
the Mobilize Wikidata project for GSoC 2013. Having developed apps for the
Windows Phone I believe has given me some experience in developing mobile
UIs, which shall help me contribute for this project.

The link for a mentor has not been provided. Could you please direct me to
where I should start discussing for a solution for implementing a mobile
view for Wikidata.

I am really excited to help out, please let me know where to start.


Links for the apps I had developed:

1.
http://www.windowsphone.com/en-ug/store/app/caladd/6546cf64-7fdd-43b0-aaab-9677b433c310

2.
http://www.windowsphone.com/en-ug/store/app/doodle/be9f29de-1439-4e06-abd5-2b96da5d177

 Thanks a lot!
-- 
Siddha Ganju
2nd Year Undergraduate Student
Computer Science and Engineering Department
National Institute of Technology, Hamirpur - 177005
E-mail Id : siddhaga...@gmail.com
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Re: [Wikitech-l] Query about GSoC 2013

[Lydia Pintscher]

Hey Siddha :)

On Mon, Apr 22, 2013 at 6:50 PM, Siddha Ganju siddhaga...@gmail.com wrote:
 Hi! This is Siddha, an open source enthusiast and I really want to work on
 the Mobilize Wikidata project for GSoC 2013. Having developed apps for the
 Windows Phone I believe has given me some experience in developing mobile
 UIs, which shall help me contribute for this project.

Great!

 The link for a mentor has not been provided. Could you please direct me to
 where I should start discussing for a solution for implementing a mobile
 view for Wikidata.

 I am really excited to help out, please let me know where to start.

Have you already looked at the other threads about this project on
this mailing list? Reading them is a good start. Let me know what
other questions you have after that.


Cheers
Lydia

--
Lydia Pintscher - http://about.me/lydia.pintscher
Community Communications for Technical Projects

Wikimedia Deutschland e.V.
Obentrautstr. 72
10963 Berlin
www.wikimedia.de

Wikimedia Deutschland - Gesellschaft zur Förderung Freien Wissens e. V.

Eingetragen im Vereinsregister des Amtsgerichts Berlin-Charlottenburg
unter der Nummer 23855 Nz. Als gemeinnützig anerkannt durch das
Finanzamt für Körperschaften I Berlin, Steuernummer 27/681/51985.

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Re: [Wikitech-l] Query performance - run code faster, merge code faster :-)

[Nischay Nahata]

I found EXPLAIN (http://dev.mysql.com/doc/refman/5.0/en/using-explain.html)
pretty useful during my project; rather than theories it shows
the exact way the query is being resolved and if the indexes are being used
rightly.

On Thu, Mar 7, 2013 at 6:06 AM, Sumana Harihareswara
suma...@wikimedia.orgwrote:

 If you want your code merged, you need to keep your database queries
 efficient.  How can you tell if a query is inefficient? How do you write
 efficient queries, and avoid inefficient ones?  We have some resources
 around:

 Roan Kattouw's

 https://www.mediawiki.org/wiki/Manual:Database_layout/MySQL_Optimization/Tutorial
 -- slides at
 https://commons.wikimedia.org/wiki/File:MediaWikiPerformanceProfiling.pdf

 Asher Feldman's
 https://www.mediawiki.org/wiki/File:MediaWiki_Performance_Profiling.ogv
 -- slides at https://www.mediawiki.org/wiki/File:SQL_indexing_Tutorial.pdf

 More hints:
 http://lists.wikimedia.org/pipermail/toolserver-l/2012-June/005075.html

 When you need to ask for a performance review, you can check out
 https://www.mediawiki.org/wiki/Developers/Maintainers#Other_Areas_of_Focus
 which suggests Tim Starling, Asher Feldman, and Ori Livneh.  I also
 BOLDly suggest Nischay Nahata, who worked on Semantic MediaWiki's
 performance for his GSoC project in 2012.

 --
 Sumana Harihareswara
 Engineering Community Manager
 Wikimedia Foundation




-- 
Cheers,

Nischay Nahata
nischayn22.in
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Re: [Wikitech-l] Query performance - run code faster, merge code faster :-)

[Luke Welling WMF]

The advice on
https://wikitech.wikimedia.org/wiki/Query_profiling_for_features_developers
sounds
good.

Is there more detail somewhere on how to do this part Test your query
against production slaves prior to full deployment?

Luke


On Wed, Mar 6, 2013 at 8:14 PM, Matthew Flaschen mflasc...@wikimedia.orgwrote:

 On 03/06/2013 04:36 PM, Sumana Harihareswara wrote:
  If you want your code merged, you need to keep your database queries
  efficient.  How can you tell if a query is inefficient? How do you write
  efficient queries, and avoid inefficient ones?  We have some resources
  around:
 
  Roan Kattouw's
 
 https://www.mediawiki.org/wiki/Manual:Database_layout/MySQL_Optimization/Tutorial
  -- slides at
 
 https://commons.wikimedia.org/wiki/File:MediaWikiPerformanceProfiling.pdf
 
  Asher Feldman's
  https://www.mediawiki.org/wiki/File:MediaWiki_Performance_Profiling.ogv
  -- slides at
 https://www.mediawiki.org/wiki/File:SQL_indexing_Tutorial.pdf

 And
 https://wikitech.wikimedia.org/wiki/Query_profiling_for_features_developers

 Matt Flaschen

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Re: [Wikitech-l] Query performance - run code faster, merge code faster :-)

[Tim Starling]

On 07/03/13 12:12, Asher Feldman wrote:
 Ori - I think this has been discussed but automated xhprof configuration as
 part of the vagrant dev env setup would be amazing :)

I don't think xhprof is the best technology for PHP profiling. I
reported a bug a month ago which causes the times it reports to be
incorrect by a random factor, often 4 or so. No response so far. And
its web interface is packed full of XSS vulnerabilities. XDebug +
KCacheGrind is quite nice.

-- Tim Starling



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Re: [Wikitech-l] Query performance - run code faster, merge code faster :-)

[Asher Feldman]

On Thu, Mar 7, 2013 at 3:57 PM, Tim Starling tstarl...@wikimedia.orgwrote:

 On 07/03/13 12:12, Asher Feldman wrote:
  Ori - I think this has been discussed but automated xhprof configuration
 as
  part of the vagrant dev env setup would be amazing :)

 I don't think xhprof is the best technology for PHP profiling. I
 reported a bug a month ago which causes the times it reports to be
 incorrect by a random factor, often 4 or so. No response so far. And
 its web interface is packed full of XSS vulnerabilities. XDebug +
 KCacheGrind is quite nice.


That's disappointing, I wonder if xhprof has become abandonware since
facebook moved away from zend.  Have you looked at Webgrind (
http://code.google.com/p/webgrind/)?  If not, I'd love to see it at least
get a security review.  KCacheGrind is indeed super powerful and nice, and
well suited to a dev vm.  I'm still interested in this sort of profiling
for a very small percentage of production requests though, such as 0.1% of
requests hitting a single server.  Copying around cachegrind files and
using KCacheGrind wouldn't be very practical.
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[Wikitech-l] Query performance - run code faster, merge code faster :-)

[Sumana Harihareswara]

If you want your code merged, you need to keep your database queries
efficient.  How can you tell if a query is inefficient? How do you write
efficient queries, and avoid inefficient ones?  We have some resources
around:

Roan Kattouw's
https://www.mediawiki.org/wiki/Manual:Database_layout/MySQL_Optimization/Tutorial
-- slides at
https://commons.wikimedia.org/wiki/File:MediaWikiPerformanceProfiling.pdf

Asher Feldman's
https://www.mediawiki.org/wiki/File:MediaWiki_Performance_Profiling.ogv
-- slides at https://www.mediawiki.org/wiki/File:SQL_indexing_Tutorial.pdf

More hints:
http://lists.wikimedia.org/pipermail/toolserver-l/2012-June/005075.html

When you need to ask for a performance review, you can check out
https://www.mediawiki.org/wiki/Developers/Maintainers#Other_Areas_of_Focus
which suggests Tim Starling, Asher Feldman, and Ori Livneh.  I also
BOLDly suggest Nischay Nahata, who worked on Semantic MediaWiki's
performance for his GSoC project in 2012.

-- 
Sumana Harihareswara
Engineering Community Manager
Wikimedia Foundation

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Re: [Wikitech-l] Query performance - run code faster, merge code faster :-)

[Ori Livneh]

On Wednesday, March 6, 2013 at 4:36 PM, Sumana Harihareswara wrote:
 When you need to ask for a performance review, you can check out
 https://www.mediawiki.org/wiki/Developers/Maintainers#Other_Areas_of_Focus
 which suggests Tim Starling, Asher Feldman, and Ori Livneh.

It's bit funny to see my name in that company: I'd wager most of the engineers 
at the Foundation know more about the topic than me. But happy to help if I can.

--
Ori Livneh



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Re: [Wikitech-l] Query performance - run code faster, merge code faster :-)

[Asher Feldman]

Database query performance isn't the leading performance bottleneck on the
WMF cluster.  If reading or writing to a database, certainly do take the
time to specifically profile your database queries, and make sure to
efficiently use caching (and avoid stampede scenarios on cache expiration)
whenever possible.  Hopefully in the future, caching won't be as up to
individual developers to get right on an ad hoc basis.  In the last year,
we made changes that reduced the query load to mysql masters by nearly
70%.  Those queries were well written - there was nothing to tune at the
sql layer.  The point being, query tuning can't substitute for or even
correlate to making efficient design decisions.

If you have profiled sql queries, or if your code doesn't have any to
profile, don't stop there.  Profiling the code itself is at least as
important.  The mediawiki profiler (
https://www.mediawiki.org/wiki/Profiler#Profiling) offers an easy place to
start and it's good to include profiling hooks as they automatically result
in p90/p99, etc. latency graphs in graphite in production.  But for
individual development environments, setting up xhprof might be more
useful.  There are plenty of tutorials out there, such as -
http://blog.cnizz.com/2012/05/05/enhanced-php-performance-profiling-with-xhprof/

Ori - I think this has been discussed but automated xhprof configuration as
part of the vagrant dev env setup would be amazing :)

On Wed, Mar 6, 2013 at 4:36 PM, Sumana Harihareswara
suma...@wikimedia.orgwrote:

 If you want your code merged, you need to keep your database queries
 efficient.  How can you tell if a query is inefficient? How do you write
 efficient queries, and avoid inefficient ones?  We have some resources
 around:

 Roan Kattouw's

 https://www.mediawiki.org/wiki/Manual:Database_layout/MySQL_Optimization/Tutorial
 -- slides at
 https://commons.wikimedia.org/wiki/File:MediaWikiPerformanceProfiling.pdf


Roan's slides actually at
https://www.mediawiki.org/wiki/File:SQL_indexing_Tutorial.pdf

But! If you're a developer and would appreciate guidance around how to best
create and efficiently use indexes, I highly recommend this slide deck:
http://www.percona.com/files/presentations/WEBINAR-tools-and-techniques-for-index-design.pdf



 Asher Feldman's
 https://www.mediawiki.org/wiki/File:MediaWiki_Performance_Profiling.ogv
 -- slides at https://www.mediawiki.org/wiki/File:SQL_indexing_Tutorial.pdf


slides actually at
https://commons.wikimedia.org/wiki/File:MediaWikiPerformanceProfiling.pdf


 More hints:
 http://lists.wikimedia.org/pipermail/toolserver-l/2012-June/005075.html


Due to the use of views on toolserver, it isn't really possible to use that
environment to profile or tune queries as they would actually run in
production.



 When you need to ask for a performance review, you can check out
 https://www.mediawiki.org/wiki/Developers/Maintainers#Other_Areas_of_Focus
 which suggests Tim Starling, Asher Feldman, and Ori Livneh.  I also
 BOLDly suggest Nischay Nahata, who worked on Semantic MediaWiki's
 performance for his GSoC project in 2012.

 --
 Sumana Harihareswara
 Engineering Community Manager
 Wikimedia Foundation

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Re: [Wikitech-l] Query performance - run code faster, merge code faster :-)

[Matthew Flaschen]

On 03/06/2013 04:36 PM, Sumana Harihareswara wrote:
 If you want your code merged, you need to keep your database queries
 efficient.  How can you tell if a query is inefficient? How do you write
 efficient queries, and avoid inefficient ones?  We have some resources
 around:
 
 Roan Kattouw's
 https://www.mediawiki.org/wiki/Manual:Database_layout/MySQL_Optimization/Tutorial
 -- slides at
 https://commons.wikimedia.org/wiki/File:MediaWikiPerformanceProfiling.pdf
 
 Asher Feldman's
 https://www.mediawiki.org/wiki/File:MediaWiki_Performance_Profiling.ogv
 -- slides at https://www.mediawiki.org/wiki/File:SQL_indexing_Tutorial.pdf

And
https://wikitech.wikimedia.org/wiki/Query_profiling_for_features_developers

Matt Flaschen

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[Wikitech-l] Query profiling for features developers

[Steven Walling]

Hey all,

Just wanted to share this piece of new documentation with everyone:
https://wikitech.wikimedia.org/wiki/Query_profiling_for_features_developers

This came out of a discussion about queries we need to run for the next
iteration of Extension:GettingStarted by Ori, Matt Flaschen, and S Page.

-- 
Steven Walling
https://wikimediafoundation.org/
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Re: [Wikitech-l] Query profiling for features developers

[Quim Gil]

On 03/05/2013 01:44 PM, Steven Walling wrote:

Just wanted to share this piece of new documentation with everyone:
https://wikitech.wikimedia.org/wiki/Query_profiling_for_features_developers


Thank you for improving our documentation.

Is there any reason not to have this content at mediawiki.org linked 
with the rest of developer docs?


--
Quim Gil
Technical Contributor Coordinator @ Wikimedia Foundation
http://www.mediawiki.org/wiki/User:Qgil

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Re: [Wikitech-l] Query profiling for features developers

[Matthew Flaschen]

On 03/05/2013 04:27 PM, Quim Gil wrote:
 On 03/05/2013 01:44 PM, Steven Walling wrote:
 Just wanted to share this piece of new documentation with everyone:
 https://wikitech.wikimedia.org/wiki/Query_profiling_for_features_developers

 
 Thank you for improving our documentation.
 
 Is there any reason not to have this content at mediawiki.org linked
 with the rest of developer docs?

I think this is a border-line case.  Some of it (e.g. the parts about
production slaves and Graphite) mainly applies to the WMF cluster.

I've added a soft redirect at
https://www.mediawiki.org/wiki/Query_profiling_for_features_developers
though.

Matt Flaschen

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[Wikitech-l] query data from Wikipedia dump?

[zh509]

I don't know if here is the space to ask this. I heard there are some web 
where people voluntarily help on querying data list from Wikipedia dump 
and solve statistic problem.

May I ask is it still exist? If so, how can i find it?

best, 

Zeyi





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Re: [Wikitech-l] query data from Wikipedia dump?

[Huib Laurens]

Hi,

I think that that is done on the databases on the toolserver instead
of the dumps.

http://www.toolserver.org

Huib

2010/3/9, zh...@york.ac.uk zh...@york.ac.uk:
 I don't know if here is the space to ask this. I heard there are some web
 where people voluntarily help on querying data list from Wikipedia dump
 and solve statistic problem.

 May I ask is it still exist? If so, how can i find it?

 best,

 Zeyi





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-- 

The soldiers graves are great preachers of peace

http://commons.wikimedia.org/wiki/User:Abigor

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