Posts Tagged 'development'

Top 20 Replies by Programmers

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Category: Jokes

Published on Friday, 17 September 2004 00:00

Written by Administrator

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Top 20 Replies by Programmers when their programs don't work
 1. "It works on my machine."  
 2. "Where were you when the program blew up?" 
 3. "Why do you want to do it that way?" 
 4. "You can't use that version on your system." 
 5. "Even though it doesn't work, how does it feel?" 
 6. "Did you check for a virus on your system?" 
 7. "Somebody must have changed my code." 
 8. "It works, but it hasn't been tested." 
 9. "THIS can't be the source of THAT." 
 10. "I can't test everything!" 
 11. "It's just some unlucky coincidence." 
 12. "You must have the wrong version." 
 13. "I haven't touched that module in weeks!" 
 14. "There is something funky in your data." 
 15. "What did you type in wrong to get it to crash?" 
 16. "It must be a hardware problem." 
 17. "How it that possible?" 
 18. "It worked yesterday." 
 19. "It's never done that before..." 
 20. "That's weird...." 

changing architecture of component

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Category: com_bayesianSpamFiltering

Published on Tuesday, 27 September 2005 00:00

Written by Administrator

Hits: 5170

As I am in the middle of the development (a little bit more than 60% done) of my PHP Bayesian Naive Filter (a learning filter against spams comment, guestbook, and posting in general) for Joomla/Mambo and after reading some paper found on internet:

• On Attacking Statistical Spam Filters, Gregory L. Wittel and S. Felix Wu - Department of Computer Science - University of California, Davis One Shields Avenue, Davis, CA 95616 USA
• A Naive Bayes Spam Filter, Kai Wei This email address is being protected from spambots. You need JavaScript enabled to view it. CS281A Project, Fall 2003
• But there is more...

I decide that my project will be certainly a failure if I rewrite or reuse a Bayesian filter engine which is not accurate or using the latest countermeasures. Since I do not want to develop during 3 years an effective filter (will I ever be able to do it???), I came across the idea of implementing the component com_bayesiannaivefilter in such a way that I can abstract the core engine and use the work done by the best open source project.

It is also clear for me since the beginning that a spam filter must be trained on a very large data volume (more than 1000 messages, the more the better) in order to categorize the message with accuracy. Webservices will have my preference as an internet entities with the require cpu horsepower and data store should be able to offer the best categorizing messages efficiency....

My component will be able to use following Bayesian Naive Filter core: (planned but not done, I it is technically possible I will do it)

Each technology may contains many core engine, or different versions. I will fill this table with possible candidate (You can heelp me by suggesting or speeding development).

Core requirement:

• Use mySQL,
• Most of internet provider allow the use of CGI-BIN, PERL, JAVA

This project will be soon committed to Joomla forge!

Open Source Joomla and PHP development with Eclipse

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Category: SolarJoomla

Published on Friday, 14 April 2006 21:29

Written by Administrator

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When Eclipse meet Joomla

Project: SolarJoomla
The easiest way to develop component, modules, bots for Jooomla using best of the breed open source software.

In order to speed up development of Joomla software, I am currently developing a developer package "start and ready to work". This package will be release at the beginning of next week (18.04.2006)

Click read more...

Read more: Open Source Joomla and PHP development with Eclipse

HTTP error status messages

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Category: References

Published on Saturday, 06 January 2007 14:12

Written by Administrator

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Future review of Joomla!® 1.5 Development Cookbook and Build and Manage Applications with Maven, Continuum, and Archiva

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Category: Development

Published on Friday, 16 October 2009 00:00

Written by Administrator

Hits: 3704

Packt publishing has offered me to make a review of two of their new books (Thanks to them). I should receive free samples for review beginning of next week. Since it is two of my favorite subjects (Maven and Joomla!® ), I think it may also interest you. A review will follow in some days.

Build and Manage Applications with Maven, Continuum, and Archiva

• Install Apache Maven and follow the sample application to build up your project as quickly as possible
• Test your applications to ensure maximum stability using Maven's inbuilt tools
• Use Maven's report and checking tools to ensure the health of your projects
• Explore Apache Continuum which will help you to ensure the health of your source code
• Improve your team builds with the powerful combination of Maven, Archiva and Continuum
• Install and run the repository manager Apache Archiva

 

Joomla!® 1.5 Development Cookbook 

• Make your extensions extensible, add extensions points to allow third parties to customize your extension
• Create international extensions by enabling multilingual capabilities
• Build more than just HTML pages - create PDF documents, Atom Feeds, and more!
• Improve the user experience by adding Ajax
• Create Atom and RSS feeds to keep users up-to-date
• Utilize the power of Subversion to maintain your source code
• Execute database queries and handle returned data in order to access and modify your data
• Dynamically extend your database tables using JParameter to make your extensions more flexible
• Keep your gremlins at bay by handling errors the Joomla! way
• Work with the file system, interrogate existing files and folders and store data in the file system
• Take control of your workflows by using www.JoomlaCode.org to manage your Joomla! projects

Agile Scrum anti patterns

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Category: Scrum Software development

Published on Wednesday, 08 September 2010 19:59

Written by Administrator

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Really worth reading if you are experiencing Agile Scrum development.

I do think AGILE and SCRUM has its place.  It is just that I believe this place is running projects under 5 people and delivery durations of less than 6 months. At that level, employing the right people with the right skills and motivation frequently guarantees that MAGIC will occur. The new media industry proves this everyday, irrespective of approach /method used. Good people always have the potential to overcome deficiencies with methods /approaches and poor management. I have seen it time and time again.

From AGILE /SCRUM Fails to get to grips with Human Psychology.
Posted by Kevin Brady on Thu 17th August 2006 at 03:10 PM, Filed in Software Dev Methodologies,  Key Articles

This is what I would call 

anti patterns for Scrum

I think you can learn a lot more from these anti scrum pattern failures than from success stories. The path to success is narrower than you may think!, and you can be on a parallel road leading to a failure. Take also time to read all the comments, some are really interesting.

What is the most interesting is this article was written in 2006!

AGILE /SCRUM Fails to get to grips with Human Psychology.

Need for Speed? mod_pagespeed from Google

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Category: Apache

Published on Thursday, 04 November 2010 22:05

Written by Administrator

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mod_pagespeed is the latest addition to our family of products, performing on-the-fly optimization in the Apache™ 2 HTTP Server. It provides webmasters and web developers that manage their Apache 2 configuration with technology that applies Page Speed performance best practices automatically. Webmasters can get the benefits of the optimizations without having to manually going back and fixing the performance issues that Page Speed detects.

If you trust me, you can download the library module libmod_pagespeed.so for Apache 2.2

from http://drivers.waltercedric.com/

Check before installing the MD5 keys of this file

# md5sum -b mod_pagespeed.so
187995e3623a222ec5b54c331ee7ffaa *mod_pagespeed.so

If it matches, drop it into your Apache library folder /usr/lib64/apache2/

Build Apache module mod_pagespeed yourself

On my OpenSuSE system, I was forced to install first

zypper in gcc-c++

Then read  http://code.google.com/p/modpagespeed/wiki/HowToBuild

you should get after a successful build

• ./out/Release/libmod_pagespeed.so
• ./out/Release/install/common/pagespeed.conf

Install the module library

cp ./out/Release/libmod_pagespeed.so  /usr/lib64/apache2/mod_pagespeed.so

Configuration

After installing mod_pagespeed, it can be customized and configured by editing the Apache configuration file

/etc/apache2/conf.d/pagespeed.conf

so you can run

# cp ./out/Release/install/common/pagespeed.conf /etc/apache2/conf.d/pagespeed.conf

Create some directories

# mkdir /var/mod_pagespeed/
# mkdir /var/mod_pagespeed/cache/
# mkdir /var/mod_pagespeed/files

Has to be writtable by apache

chown -R wwwrun:www /var/mod_pagespeed/ 

and finally restart apache

 apache2ctl restart

There is a lot of available settings that are all well explained in this page http://code.google.com/speed/page-speed/docs/using_mod.html

Here is my /etc/apache2/conf.d/pagespeed.conf stripped of all comments as an example:

LoadModule pagespeed_module /usr/lib64/apache2/mod_pagespeed.so

    SetOutputFilter MOD_PAGESPEED_OUTPUT_FILTER
    ModPagespeed on

    ModPagespeedDomain www.waltercedric.com
    ModPagespeedUrlPrefix                "http://www.waltercedric.com/mod_pagespeed/"
    ModPagespeedFileCachePath "/var/mod_pagespeed/cache/"
    ModPagespeedGeneratedFilePrefix "/var/mod_pagespeed/files/"
    ModPagespeedRewriteLevel CoreFilters
    ModPagespeedEnableFilters collapse_whitespace
    ModPagespeedEnableFilters extend_cache
    ModPagespeedEnableFilters combine_css
    ModPagespeedEnableFilters rewrite_css
    ModPagespeedEnableFilters rewrite_javascript
    ModPagespeedEnableFilters rewrite_images
    ModPagespeedEnableFilters remove_comments
    
    # This page lets you view statistics about the mod_pagespeed module.
    
        Order allow,deny
        # You may insert other "Allow from" lines to add hosts you want to
        # allow to look at generated statistics.  Another possibility is
        # to comment out the "Order" and "Allow" options from the config
        # file, to allow any client that can reach your server to examine
        # statistics.  This might be appropriate in an experimental setup or
        # if the Apache server is protected by a reverse proxy that will
        # filter URLs in some fashion.
        Allow from localhost
        SetHandler mod_pagespeed_statistics
    

Troubleshooting

You may be forced to remove mod_deflate

You can disable mod_pagespeed by adding in the url  ?mod_page_speed=0

Some mod_pagespeed filters

• add_instrumentation Adds client-side latency instrumentation.
• extend_cache Improves cacheability.
• collapse_whitespace Removes unnecessary whitespace in HTML.
• combine_css Combines multiple CSS files into one.
• combine_heads Combines multiple elements into one.
• move_css_to_head Moves CSS into the element.
• elide_attributes Removes unnecessary attributes in HTML tags.
• inline_css Inlines small external CSS files.
• inline_javascript Inlines small external Javascript files.
• outline_css  Moves large inline tags into external files for cacheability.
• outline_javascript  Moves large inline tags into external files for cacheability.
• remove_quotes  Removes unnecessary quotes in HTML tags.
• remove_comments  Removes HTML comments.
• rewrite_css Minifies CSS.
• rewrite_images Rescales, and compresses images; inlines small ones.
• rewrite_javascript Minifies Javascript.

Links

• http://code.google.com/speed/page-speed/
• http://code.google.com/p/modpagespeed/

Agile Testing Poster

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Category: Java

Published on Tuesday, 26 June 2012 09:10

Written by Administrator

Hits: 1449

Agile testing is a software testing practice that follows the principles of agile software development. Agile testing is built upon the philosophy that testers need to adapt to rapid deployment cycles and changes in testing patterns. Providing and getting feedback early, fast and regularly is one of the testers main task.

From http://bbv.ch/images/bbv/pdf/downloads/poster/bbv12_poster_agile_testing_1.0_web.pdf

You can order a print version at http://www.bbv.ch/de/posterbestellung.html

Find more at http://bbv.ch/de/unternehmen/publikationen.html

Understand Agile Development Methods with the Agile Development Poster

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Category: Development

Published on Wednesday, 17 October 2012 19:29

Written by Administrator

Hits: 946

Creating software with the agile development process delivers finished products quickly in fast changing and uncertain project environments. While agile development describes several iterative and incremental software development methods, they all involve continuous planning, continuous testing and continuous integration. (don’t under estimate effort to reach this prior to try to be agile)

All agile development methods focus on helping teams to collaborate and make decisions quickly and effectively. The most popular agile methodologies is now Scrum that is resumed in the poster below.

Thanks to Agile software development, you will be able to accelerates the delivery of initial business value. Through continuous planning and feedback, agile development ensures that value continues to be maximized throughout the development process.

(Version One, 2009)

Antipatterns

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Category: Design

Published on Saturday, 10 December 2005 00:00

Written by Administrator

Hits: 6460

AntiPattern: "An AntiPattern is a literary form that describes a commonly occurring solution to a problem that generates decidedly negative consequences.