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Title
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Type
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Date
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| Optimizing resource management in supercomputers with SLURM
The arms race of supercomputers is fascinating to watch as their evolving architectures squeeze out more and more performance. One interesting fact about supercomputers is that they all run a version of Linux. To yield the greatest amount of power from an architecture, the SLURM open source job scheduler (used by the Chinese Tianhe-IA supercomputer, and the upcoming IBM Sequoia supercomputer) optimizes resource allocation and monitoring. Learn about SLURM and its approach to parallelizing workloads in clusters.
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Articles | 22 May 2012 |
| Building a new theme for Drupal 7
Themes are plug-ins for Drupal that build or enhance Drupal's core look and feel. In this article, get an overview of how the theme system functions in Drupal, including the various components of a Drupal theme and how to determine which components are necessary or optional elements, and learn how to construct a new theme from scratch using the default PHPTemplate theme engine.
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Articles | 22 May 2012 |
| AIX system migration installation
Migration installation is the way to migrate systems from one version
of an operating system (OS) level to another OS version. This method of installation preserves
all user data configurations and file systems. Migration installation can be done in various ways and
this article provides steps for migrating system from one version to another version.
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Articles | 18 May 2012 |
| Linux for Windows systems administrators: Understand how to execute applications that run on Linux
Using applications is the main purpose of a Linux server. Whether your newly installed application runs from a desktop or the command line, this article helps you use your Microsoft Windows experience to quickly understand how to run applications on Linux.
Also available in:
Chinese
Portuguese
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Articles | 17 May 2012 |
| LPI exam prep: Network client management
In this tutorial, the fifth in a series of seven tutorials covering intermediate network administration on Linux, David Mertz continues preparing you to take the Linux Professional Institute Intermediate Level Administration (LPIC-2) Exam 202. By following this tutorial, you will examine several protocols' centralized configuration of network settings on clients within a network. DHCP is widely used to establish basic handshaking to clients machines such as assigning IP addresses. At a higher level, NIS and (more often) LDAP are used for arbitrary shared information among machines on a network. This tutorial also discusses PAM, which is a flexible, networked, user authentication system.
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Tutorial | 17 May 2012 |
| Using XPath with PHP
If your PHP applications perform beyond CRUD operations, chances are you have
worked with XML. Navigating an XML document or data stream for the desired data
elements can be cumbersome, though, and even somewhat intimidating for PHP developers. It can be especially overwhelming when the XML data structure is complex. XPath is a W3C standard whose sole purpose is just that -- getting to the right data element, or, specifically, the desired node. PHP supports XPath as part of its XML classes and functions. In this article you explore some basic scenarios for locating information in XML and how XPath can do the hard work for you in your PHP applications.
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Articles | 17 May 2012 |
| Introducing Riak, Part 2: Integrating Riak as a heavy-duty caching server for web applications
This article is Part 2 of a two-part series about Riak, a highly scalable, distributed data store written in Erlang and based on Dynamo, Amazon's high availability key-value store. For websites with heavy loads, a scalable caching solution can lighten the load on the application and database servers. This particularly applies to data that is read often but updated only occasionally. Explore an in-depth example of an online betting site and how you can use Riak to implement a caching solution. You also will learn to integrate Riak with an existing website and look at other Riak features such as search and how to use it to directly serve user requests. You will need a working Riak cluster if you want to follow along with the examples. You can find the steps for setting up a cluster locally in Part 1 of this series.
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Articles | 15 May 2012 |
| Use of IPSEC in Linux when configuring network-to-network and point-to-point VPN connections
This article takes a detailed look at the design principles, the basis for deploying VPN, and the IPSEC protocol concept, providing a description of the general features of IPSEC and of the mechanisms required for its implementation. This article was specially selected for translation by developerWorks Russia as an example of developerWorks world-wide offerings.
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Articles | 15 May 2012 |
| Introducing Riak, Part 1: The language-independent HTTP API
This is Part 1 of a two-part series about Riak, a highly scalable,
distributed data store written in Erlang and based on Dynamo, Amazon's high availability
key-value store. This article provides an introduction to Riak and covers the basics of
storing and retrieving items in Riak using its HTTP API. Some of Riak's other features will
also be introduced.
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Articles | 14 May 2012 |
| Get a picture of your IBM i environment with DB2 catalog views
Traditionally, Traditionally, IBM DB2® for i catalog views have only provided metadata about existing database objects. A new set of catalog views also provide information about your IBM i system environment. Specifically, these view make it easy to access information about the Group PTFs and TCP/IP network connections related to your DB2 for i database.
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Articles | 10 May 2012 |
| Social networks meet open-source project hosting
The revolutionary effects of social networks have not missed the world of software development. Many services emerged to support collaboration on projects over the Internet, especially in the world of open-source software. Concepts such as distributed version control, routine forking, and pull requests are in some ways changing the basic process of group development. One of the most popular social networks for software collaboration is GitHub, whose motto is "Social Coding." Learn about development social networks in the context of GitHub, but with principles applicable to other sites such as BitBucket, and even to your organization's internal systems.
Also available in:
Portuguese
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Articles | 08 May 2012 |
| Add Linux power to wireless routers with advanced tips and tricks for DD-WRT
DD-WRT brings all the power of the Linux networking stack to inexpensive wireless routers, turning a consumer router into a mighty networking powerhouse. Learn how to install and secure DD-WRT, and learn about the powerful, flexible command line behind the GUI.
Also available in:
Portuguese
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Articles | 08 May 2012 |
| Meet six misunderstood Ruby features
Suppose you are a C++ developer and you
need to do some prototyping quickly in Ruby. When you pick up a Ruby reference book
like the Pickaxe or browse the Ruby site, you see familiar constructs like
class declaration, support for threads, and exception handling. Just when
you thought you knew how Ruby works, you realize that concurrency in your Ruby code is
not behaving like Boost threads, catch and throw are not what they seem, and others have used
something called self all over the place in their Ruby script. Welcome to Ruby!
Also available in:
Portuguese
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Articles | 01 May 2012 |
| Protect your data at the speed of light with gKrypt, Part 2
Meet the gKrypt engine, the world's first package to employ general purpose
graphics units (GPGPUs) for data encryption. It uses an Advanced Encryption Standard (AES) based 256-bit block cipher. This is the second article in a two-part series on AES encryption and the gKrypt engine. Part 1 introduced gKrypt and explained the AES algorithm in detail, its parallel breakdown and how to map it on a massive GPU architecture using the Compute Unified Device Architecture (CUDA). Part 2 looks at how AES is implemented on CUDA.
Also available in:
Portuguese
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Articles | 01 May 2012 |
| Protect your data at the speed of light with gKrypt, Part 1
Meet the gKrypt engine, the world's first package to employ general purpose
graphics units (GPGPUs) for data encryption, which is an important tool for information security. It uses an Advanced Encryption Standard (AES) based 256-bit block cipher to provide robust security. In this Part 1 of a two-part series, explore the AES, the GPU port of the Rijndael algorithm for Linux, the parallelizing of the AES algorithm, and the use of the gKrypt Engine supporting CUDA for NVIDIA-based GPUs.
Also available in:
Japanese
Portuguese
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Articles | 01 May 2012 |
| Enable multiuser logins with VNC
Virtual Network Computing (VNC) is a popular tool for providing remote access to computers. The usual VNC configuration is optimized for single-user workstations, and logging in to the VNC port directly accesses a single user's desktop. This configuration is awkward on multiuser computers, however. Fortunately, you have an alternative. By linking VNC to a Linux computer's normal X Display Manager Control Protocol (XDMCP) server, accessing the VNC port enables users to provide their user names and passwords, thereby enabling a single VNC server instance to handle multiple user logins.
Also available in:
Chinese
Portuguese
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Articles | 24 Apr 2012 |
| Use SQL-like languages for the MapReduce framework
Select the most suitable MapReduce implementation for large scale data analysis jobs based on your skills, preferences, and requirements. MapReduce is a simple and powerful programming model that enables the easy development of scalable parallel applications to process vast amounts of data on large clusters of commodity machines. It isolates the application from the details of running a distributed program. But many programmers are unfamiliar with the MapReduce programming style and prefer to use a SQL-like language to perform their tasks. In this article, read an overview of high-level languages and systems designed to tackle these problems and add declarative interfaces on top of the MapReduce framework.
Also available in:
Portuguese
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Articles | 17 Apr 2012 |
| Introducing Spring Roo, Part 5: Write advanced and wrapper Spring Roo add-ons
Spring Roo Advanced add-ons provide the mechanisms to add Java code in applications (for example, building an add-on that can write equals and hashcode methods for your domain object). With the addon create command, you can create a template of an advanced add-on. You then can extend the template to meet developer requirements. This article walks through the steps to create an advanced add-on.
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Articles | 10 Apr 2012 |
| Introducing Spring Roo, Part 2: Developing an application with Spring Roo
In Part 1 of this series, we looked at building a
CRUD-based application in minutes with Roo. Here in Part 2, we will
extend that application to a full-fledged enterprise application by adding
features such as Spring security, email support, and many others.
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Articles | 10 Apr 2012 |
| Implement strong WiFi encryption the easy way with hostapd
Keep wireless security simple. hostapd, the Host Access Point daemon provides solid WiFi encryption that meets enterprise standards without all the overhead of running FreeRADIUS. Learn more about this tool and how to incorporate it into your environment.
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Articles | 10 Apr 2012 |
| Introducing Spring Roo, Part 3: Developing Spring Roo add-ons
Spring Roo is a RAD tool that lets you build applications (mainly web)
quickly and easily. Under the hood, Spring Roo is based on OSGI add-on
architecture, which makes it easy to extend Spring Roo by adding add-ons.
Spring Roo provides commands to create add-ons that can be very easily made
available to the Spring Roo user community. In this article, we first talk
about Spring Roo architecture, talking about how Spring Roo leverages its own
add-on architecture to provide different features, then we will create add-ons
using the Roo shell and modify them to suit our needs.
|
Articles | 10 Apr 2012 |
| Introducing Spring Roo, Part 1: Building from source
Spring Roo is a lightweight productivity tool for Java
technology that makes it fast and easy to develop Spring-based applications. Applications
created using Spring Roo follow Spring best practices and are based on
standards such as JPA, Bean Validation (JSR-303), and Dependency Injection
(JSR-330). Roo offers a usable, context-aware, tab completing shell for
building applications. Spring Roo is extensible and allows add-ons, enhancing
its capability. This article introduces Spring Roo and provides step-by-step
instructions on building Spring Roo source on Windows and *nix
systems.
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Articles | 10 Apr 2012 |
| Create and parse XML on the Android 3.0 platform
Android, the most commonly used smartphone platform, also functions on
mobile tablets. XML is the standard medium of data exchange. You can use the
same builder, parser, and transformer APIs for standard XML parsing and transformation and for Android. In this article, create and parse an XML document on an Android device using a DocumentBuilder object obtained from a DocumentBuilderFactory. You'll parse the XML document using an extension of an XML pull parser.
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Articles | 10 Apr 2012 |
| Introducing Spring Roo, Part 4: Rapid application development in cloud with Spring Roo and Cloud
Foundry
Take the rapid development of Roo a step further by creating
applications to work in the cloud with Cloud Foundry, the first open platform
as a service project created by VMWare. Learn more about the environment and
then deploy an application into Cloud Foundry using the Roo shell.
|
Articles | 10 Apr 2012 |
| Hacking PubSubHubbub
PubSubHubbub is an open protocol of web hooks for notifications of updates to news feeds in a publish/subscribe framework. It is defined as a set of HTTP server-to-server interactions integrated into Atom and RSS extensions. Despite the odd name, PubSubHubbub is fairly straightforward to use for designing applications with a lot of information updates. Learn about the standard and open-source implementations and support software for PubSubHubbub.
Also available in:
Japanese
Portuguese
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Articles | 03 Apr 2012 |
| Create rich-layout publications in EPUB 3 with HTML5, CSS3, and MathML
EPUB 3.0, which is the latest revision of the industry-standard XML e-book format, jumps into modern web technology by embracing HTML5 and CSS3. It retains its focus on XML-driven toolkits by requiring XHTML serialization and adding supplementary XML vocabularies, such as MathML and SVG. EPUB 3 offers a variety of options for developing advanced, digital-native publications. In this article, learn to create rich-layout pages using some new features in EPUB 3.
Also available in:
Japanese
Portuguese
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Articles | 20 Mar 2012 |
| Look at Linux, the operating system and universal platform
Linux is everywhere. If you peer into the smallest smart phone, to the virtual backbone of the Internet, or the largest and most powerful supercomputer, you'll find Linux. That's no simple feat given the range of capabilities expected from these platforms. Discover the omnipresence of Linux and how it supports devices large and small as well as everything in between.
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Articles | 13 Mar 2012 |
| Moving a PHP application to DB2 from MySQL, Part
4: Deploy your application
Learn why you should move a PHP application to DB2(R), how to plan
the migration, how to execute it, how to support it, and how to
handle
potential risks based on the experience of an IBM Intranet
application case
study. This four-part series shares lessons from a
successful
MySQL-to-DB2
migration for a mission-critical PHP Intranet
application used by 4,000 global
users within IBM to support content
production for ibm.com. Part 4 describes the
steps taken to deploy and support the application.
Also available in:
Portuguese
|
Articles | 08 Mar 2012 |
| Make HTML5 microdata useful, Part 2: Next generation aggregation with microdata
Part 1 of this series showed how to use microdata with Schema.org terms so search engines can display your content better in search results. It also showed how to reuse that same microdata markup to improve the display on your own site. In this article, learn to use microdata to enable a collaborating group of site owners to easily hook up their sites and share content on a centralized site.
Also available in:
Japanese
Portuguese
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Articles | 06 Mar 2012 |
| Make HTML5 microdata useful, Part 1: Using jQuery on top of microdata
The microdata specification lists two reasons why you might want to use
microdata: To allow generic scripts to provide services that are customized to the
page or to enable content from a variety of cooperating authors to be processed by a
single script in a consistent manner. In this two-part series, learn to use microdata in both of these ways, starting with generic scripts on top of microdata. In this article, you will write one snippet of HTML to give you both an interactive event map and to enable Google, Bing, and Yahoo to display your page better in search results with Rich Snippets.
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Articles | 06 Mar 2012 |
| From Java code to Java heap
This article gives you insight into the memory usage of Java code, covering the memory overhead of putting an int value into an Integer object, the cost of object delegation, and the memory efficiency of the different collection types. You'll learn how to determine where inefficiencies occur in your application and how to choose the right collections to improve your code.
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Articles | 29 Feb 2012 |
| Encode video with MongoDB work queues
MongoDB is a revolutionary data store that you can use to handle work queues composed of rich data structures.
Learn techniques for applying this methodology to encoding video.
|
Articles | 28 Feb 2012 |
| Process your data with Apache Pig
Apache Pig is a high-level procedural language for querying large semi-structured data sets using Hadoop and the MapReduce Platform. Pig simplifies the use of Hadoop by allowing SQL-like queries to a distributed dataset. Explore the language behind Pig and discover its use in a simple Hadoop cluster.
|
Articles | 28 Feb 2012 |
| Using MongoDB with Django
Django, a Python web framework, consists of an
object-relational mapper (ORM), back-end controller, and template system.
MongoDB is a document-oriented database (also known as a NoSQL database)
effective for scaling and high performance. In this article, learn how to call
MongoDB from Python (using MongoEngine), and integrate it into a Django
project in lieu of the built-in ORM.
|
Articles | 21 Feb 2012 |
| Develop with XQuery: A better programming language for the database programmer
Most programmers think the XQuery language was developed to satisfy a niche market: A data querying and transformation language designed to handle XML data. In the case of relational databases, the prevailing practice is to use SQL for non-XML data and use XQuery for XML. This article makes the case that the powerful programming constructs available in the XQuery language make it a better programming language than SQL, and that this improvement in expressiveness and ease of use is enough to warrant the design of databases with an increasing emphasis on XML data types.
|
Articles | 14 Feb 2012 |
| Cloud-based education, Part 3: Cloud-based robotics for education
Explore robotics and how the cloud
makes it more economical and available, with a broad range
of sensors, actuators, computational resources, and applications. Remote access to a wider
range of physical systems that can be time-shared and location-shifted, plus simulation
and building instances on site, will vastly expand access to robotics. Today, thanks to the cloud,
hands-on interaction with remote robotics is more feasible. This article provides a
starting point for cloud-based robotics educational strategy.
Also available in:
Portuguese
|
Articles | 14 Feb 2012 |
| Introducing PyPy
Improve the performance of your Python development and add flexibility
with PyPy with just-in-time compiler implementation. Learn about PyPy,
its benefits, and how it can accelerate development of high-performance
applications.
|
Articles | 14 Feb 2012 |
| Data analysis and performance with Spark
Spark is an interesting alternative to Hadoop, with a focus on in-memory data processing. This practice session explores multithread and multinode performance with Scala, Spark, and its tunable parameters.
|
Articles | 14 Feb 2012 |
| Using UI components in jQuery Mobile
Many UI components are available in the jQuery Mobile framework. This article provides a high-level overview of each element and how you can use it in a mobile website. It touches on specific UI components, explains the reasons to use them, and provides code examples of their use in a mobile website.
|
Articles | 08 Feb 2012 |
| Integrating MediaWiki with LDAP
Learn how to add a Lightweight Directory Access Protocol (LDAP)
authentication module to MediaWiki that will allow it to authenticate users
against an LDAP directory. Gain a better understanding of MediaWiki, Apache
Directory Services (ApacheDS), and Apache Directory Studio, and how you can
use them to create an LDAP directory for testing.
|
Articles | 07 Feb 2012 |
| Device-aware mobile sites using PHP, JavaScript, and WURFL, Part 1: Get started using the WURFL PHP API
With a rapidly growing mobile Web,
if you haven't already started working on a PHP-driven mobile site or application,
you soon will be. Detecting the capability of one mobile device among the thousands
of offerings is nearly impossible with PHP alone. But with the Wireless Universal Resource FiLe (WURFL),
this once daunting task becomes as simple as a few API calls to retrieve the device data you need
and can use with your PHP site or application.
Also available in:
Chinese
Portuguese
|
Articles | 07 Feb 2012 |
| Create a custom web services project in Drupal 7
Did you know you can provide web services through your Drupal-
powered site? Learn how to use this technique to offer more
flexibility with your content.
|
Articles | 31 Jan 2012 |
| Casting spells with ImageMagick
ImageMagick is a suite of open source tools for creating,
editing, and converting bitmap images. The advanced developer can leverage its
many capabilities to produce quality, professional bitmap images, and other
artwork for display on websites, in marketing brochures, and anywhere the
artistic mood may strike. Licensed under the Apache 2.0 license, ImageMagick
can be freely used, copied, modified, and distributed in both open and
proprietary applications.
|
Articles | 24 Jan 2012 |
| Leveraging pureXML in a Flex microblogging application, Part 1: Enabling Web services with DB2 pureXML
The pureXML capabilities of IBM DB2 allow you to store XML natively in a database without modification, while Adobe Flex applications can read XML directly and populate Flex user interfaces. In this three-part article series, you will create a microblogging application that takes advantage of pureXML, Web services, and Adobe Flex; and even allows you to publish your microblogging updates on Twitter.
|
Articles | 24 Jan 2012 |
| Scripting KVM with Python, Part 2: Add a GUI to manage KVM with libvirt and Python
Further explore how to use Python to create
scripts for managing virtual machines using KVM. Learn how to add
a GUI to expand on the simple status and display tool.
|
Articles | 17 Jan 2012 |
| Customize container-managed security with AuthenticRoast
AuthenticRoast is an open source project that works with the Java Authentication Service Provider Interface for Containers (JSR 196) to let you develop custom authentication modules for use with container-managed, declarative security. Joe Sam Shirah shows how AuthenticRoast can minimize configuration impact on Java Enterprise Edition (JEE) containers and greatly reduce coding effort for custom security requirements. A downloadable WAR with demonstration code is provided.
|
Articles | 17 Jan 2012 |
| Store datasets directly in shared memory with PHP
Learn about shared memory and how to use it in web applications
as a data storage option, benefiting from high speed, reliability, and data
exchange with other applications. Provided examples show how it may help
solve common problems in web application development.
|
Articles | 17 Jan 2012 |
| Create successful Python projects
Creating a successful open source Python project involves more than just
writing useful code. It's about community engagement, increasing cooperation
opportunities, craftsmanship, and support. Explore best practices to help you create your own successful project.
|
Articles | 10 Jan 2012 |
| Use the jQuery Mobile API for fine-grained custom control
The jQuery Mobile framework is a quick and easy way to create mobile websites.
However, you might not know that the framework has a decent API that you can use to extend the basic functionality.
This article provides an overview of some of the most useful features in the API and
gives you working code examples throughout.
|
Articles | 10 Jan 2012 |
| Using RichFaces with JSF 2
RichFaces, like most other rich/Ajax component frameworks designed for use with JavaServer Faces (JSF), was extensively revamped for compatibility with the significant changes in JSF 2. Joe Sam Shirah examines changed and new RichFaces 4.1 components that provide the same functionality he demonstrated in "An introduction to RichFaces" with version 3.1. He also updates the setup requirements for using RichFaces with JSF.
|
Articles | 10 Jan 2012 |
| Firewall uptime and security with iptables
Iptables is the standard Linux firewall application. It is easy
to configure and maintain while powerful enough to provide the control
expected from a high-end appliance. Learn how to get started with iptables,
recover from common issues, and simulate a small-office usage
scenario.
|
Articles | 04 Jan 2012 |
| Transactions with file systems using XADisk
Java applications, which store their data in files, can benefit
in many ways by accessing file-systems using transactions. Learn how to work with open source XADisk for transactional file access.
|
Articles | 19 Dec 2011 |
| Android applications using Python and SL4A, Part 1: Set up your development environment
This series of articles explores how to use Python and Scripting Layer for Android (SL4A)
to build applications for the Google Android platform. This article, the first in the series,
shows what you need to do to get everything installed and running.
Also available in:
Chinese
Portuguese
|
Articles | 19 Dec 2011 |
| Getting started with Backbone
Efficient management of the numerous lines of JavaScript code in web applications
can be a challenge. Asynchronous JavaScript and XML (Ajax) interactions heavily populate
pages to provide a better experience to the user. Single page interfaces, which
are becoming more common, are driven by Ajax. Backbone is a JavaScript framework
that can be used to create model-view-controller (MVC)-like applications and single
page interfaces. In this article, learn how useful Backbone can be for creating Ajax
applications or single page interfaces.
Also available in:
Japanese
|
Articles | 13 Dec 2011 |
| Develop lightweight mobile web applications with Dojo Mobile
Dojo Mobile is a Dojo-based widget set for
creating mobile web applications. With Dojo Mobile, you can develop lightweight,
high-performance mobile web applications. In this
article, learn how Dojo Mobile addresses the performance issues, and how
you can optimize Dojo Mobile-based user applications to make them as
small and efficient as possible. [Several clarifications have been made in the
text to better
reflect the author's original intent.]
|
Articles | 13 Dec 2011 |
| Scripting KVM with Python, Part 1: libvirt
This two-part series explores how to use Python to create scripts for
managing virtual machines using Kernel-based Virtual Machine (KVM). In this installment, learn the basics of using
libvirt and the Python bindings to build a few simple status
and display tools.
|
Articles | 06 Dec 2011 |
| Scheduling in Hadoop
Get to know Hadoop scheduling, and explore two of the algorithms
available today:fair scheduling and capacity scheduling. Also, learn how these
algorithms are tuned and in what scenarios they're relevant.
|
Articles | 06 Dec 2011 |
| Build an iOS slideshow application for the iPad
Learn to build an iOS slideshow application as you walk
through the process step-by-step in this article. The example application will communicate with a web server
to retrieve an XML slideshow definition and display the images contained in the
slideshow.
|
Articles | 29 Nov 2011 |
| Easy and beautiful documentation with Sphinx
Create maintainable, style-driven documents that can be automatically distributed in different formats using Sphinx. Discover how Sphinx abstracts the tedious parts and offers automatic functions to solve common problems like title indexing and special code highlighting.
|
Articles | 29 Nov 2011 |
| Predictive analytics in healthcare
As digital records and information become the norm in
healthcare, it enables the building of predictive analytic solutions. These
predictive models, when interspersed with the day to day operations of
healthcare providers and insurance companies, have the potential to lower cost and
improve the overall health of the population. As predictive models become more
pervasive, the need for a standard, which can be used by all the parties
involved in the modeling process: from model building to operational
deployment, is paramount. The Predictive Model Markup Language (PMML), is such
a standard. It allows for predictive solutions to be easily shared between
applications and systems. This article describes the latest release of
PMML, Version 4.1, and several ways it can be used to expedite the
adoption and use of predictive solutions in the healthcare
industry.
|
Articles | 29 Nov 2011 |
| Migrate OpenMRS to DB2 and WebSphere Application Server
Learn how to migrate OpenMRS
into IBM DB2 and IBM WebSphere Application Server. This article shows you how
to prepare the database, import the source code, and modify the project for WebSphere
Application Server.
Also available in:
Portuguese
|
Articles | 15 Nov 2011 |
| Create custom jQuery mobile themes
The high adoption rate of smartphones and
tablet devices is ultimately increasing the demand for mobile web developers and designers.
The jQuery Mobile framework lets you create mobile web experiences that rival the results
of native application development by providing instant access to applications and websites
via the web browser rather than making users download and install mobile applications.
Learn how to use the jQuery Mobile theming framework to create custom-branded mobile
websites and web applications.
|
Articles | 15 Nov 2011 |
| Combine Drupal, HTML5, and microdata
With Google, Yahoo, and Bing's announcement of schema.org,
microdata is quickly gaining ground as a way to create applications that rely on data
from many different websites. In this article, learn how to use Drupal to
add microdata to your pages. Easily make your content available for use in
applications such as Google's Rich Snippets.
|
Articles | 08 Nov 2011 |
| Better MySQL searches with Sphinx
Even though MySQL is a good general-purpose database, if your application is search-heavy, you
may get better performance by using Sphinx instead. Despite Sphinx being a full-text search tool,
it can increase the speed of your application even when working with non-full-text queries. This
article shows how to configure Sphinx for this task, includes some example queries, measures their
execution times, and demonstrates some of the trade-offs involved in the change considering what you need
to use Sphinx in a general, systematic way.
|
Articles | 08 Nov 2011 |
| Build mobile text messaging into your web apps
Mobile messaging, and Short Message Service (SMS) in particular,
is a crucial communication channel for reaching out to your users. Messaging
is also a central part of the consumer mobile experience. However, implementing
mobile messaging applications is difficult and expensive due to barriers involved
with interacting with closed telco services. This article reviews the background and
challenges of mobile messaging, and discusses several technical approaches to address
these challenges. After reading this article, you will be ready to incorporate
interactive text messaging into your own applications.
|
Articles | 02 Nov 2011 |
| Spark, an alternative for fast data analytics
Although Hadoop captures the most attention for distributed data analytics, there are alternatives that provide some interesting advantages to the typical Hadoop platform. Spark is a scalable data analytics platform that incorporates primitives for in-memory computing and therefore exercises some performance advantages over Hadoop's cluster storage approach. Spark is implemented in and exploits the Scala language, which provides a unique environment for data processing. Get to know the Spark approach for cluster computing and its differences from Hadoop.
|
Articles | 01 Nov 2011 |
| Automate development and management of cloud virtual machines
A recent trend has been to build a strong connection between cloud application and service development and operations; in particular, this trend is leading to a tighter, more efficient integration of application life cycle management (ALM) tools with cloud computing. In this article, the authors will show you how to use the open source Apache Maven build management tool to automate build and deployment projects on IBM SmartCloud Enterprise. They will also demonstrate how to integrate the management of virtual machines on the cloud into the build and deployment life cycle by developing an Apache Maven plug-in that looks up and creates virtual machines that run a J2EE application server on the cloud. You'll also discover best practices for development and deployment on the cloud and how to use IBM Cloud API's and Maven to implement these practices.
|
Articles | 29 Oct 2011 |
| Build an Eclipse development environment for Perl, Python, and PHP
Eclipse presents a wealth of capabilities for building tools for compiled languages like C and the Java programming language, but provides little support for scripting languages like Perl, Python, and PHP. For these and similar languages, the Eclipse Dynamic Languages Toolkit (DLTK) comes to the rescue. Walk through the process of building a DLTK-based IDE and discover sample code for each step.
|
Tutorial | 27 Oct 2011 |
| Beyond MySQL
Although MySQL is one of the most popular programs, many developers have
felt the need to branch it into other projects, each offering their own
speciality. Many interesting sub-projects and branches now exist.
|
Articles | 25 Oct 2011 |
| Build lightweight OSGi applications with Eclipse
OSGi has been acting as a de facto industry standard to build dynamic
modular systems in the Java world and many other fields. Using a series of
correlative examples, this article demonstrates the processes, scenarios,
solutions and practices to develop an OSGi application in Eclipse. Read
further to gain a systematic understanding of the OSGi framework and core services.
|
Articles | 25 Oct 2011 |
| Accelerate Hibernate and iBATIS applications using pureQuery,
Part 1: Enable static SQL and heterogeneous batching for Hibernate
applications
When extended with the downloadable IBM Integration Module, the IBM
Optim pureQuery Runtime simplifies the process of generating DB2 static SQL
for Hibernate and iBATIS applications. It does this without requiring changes
to your application code or gathering SQL from production
workloads. The Optim pureQuery Runtime also enables Hibernate and iBATIS
applications that access DB2 or Informix to benefit from the heterogeneous
batching feature in pureQuery. This
article is part one of a four-part series about using the IBM
Integration Module with Hibernate applications. This article includes a
downloadable sample application that illustrates how you can easily enable
static SQL and heterogeneous batch functions with Hibernate applications. The
article also provides informal elapsed time performance measurements. Part 2
focuses on iBATIS applications.
|
Articles | 21 Oct 2011 |
| Accelerate Hibernate and iBATIS applications using pureQuery,
Part 3: Auto-tune data fetch strategies in Hibernate applications with
pureQuery
Development teams that build applications using Hibernate as the Object Relational
Mapper (ORM) or persistence mechanism spend significant time tuning the amount of data that
Hibernate fetches from the database, and the number of SQL queries that Hibernate uses in each
business use-case of the application. In this article, learn how the IBM InfoSphere Optim pureQuery auto-tuning feature for
Hibernate automates the process of determining these problems and automatically fixing them without
intervention. Both the application development team and DBAs benefit from the solution.
Also available in:
Portuguese
|
Articles | 21 Oct 2011 |
| A guide to Python packaging
The best open source Python applications have great packaging. Learn more about what packaging is and basic implementation. Then, go a step farther and discover versioning and distribution as they relate to packaging.
|
Articles | 18 Oct 2011 |
| Data mining with Ruby and Twitter
Twitter is not only a fantastic real-time social networking tool, it's
also a source of rich information that's ripe for data mining. On average, Twitter users generate 140
million tweets per day on a variety of topics. This article introduces you
to data mining and demonstrates the concept with the object-oriented Ruby language.
|
Articles | 11 Oct 2011 |
| Dependency Visualization
Tracking software component dependencies can be challenging.
Since some people interpret information well visually, there is a component to
help you visually track dependencies and even highlight broken
ones.
|
Articles | 11 Oct 2011 |
| Develop an Apache HttpClient client for Android to a JAX-RS web service
Access a JAX-RS web service with the Apache HttpClient library. Jersey, a reference implementation for JAX-RS, simplifies development of RESTful web services in the Java environment. Android is a popular smartphone and this article shows you how to create a JAX-RS client for Android. You'll create an Apache HttpClient library client to a JAX-RS web service.
|
Articles | 11 Oct 2011 |
| Open source development with Eclipse: Master the basics
Learn the basics and get started working with Eclipse, an extensible open
source development platform.
|
Knowledge paths | 07 Oct 2011 |
| Integrate Blogger content with PHP applications using the Blogger Data API
Blogger is a free, popular blogging platform that lets users create
their own weblogs, and post messages and news, through a WYSIWYG editing interface.
With the Blogger Data API, which is REST-based, you can
access Blogger content through any XML-compliant programming toolkit. In this
article, learn how to use the Blogger Data API to list blog
content, add or edit blog posts, and manipulate blog comments with the Zend
Framework's Zend_Gdata component. You'll build a simple application that
demonstrates the power of the Blogger API.
|
Articles | 04 Oct 2011 |
| Add charting on mobile browsers
Develop online applications that are both thumb and user friendly for the mobile environment with PHP, XML, jQuery, jQuery mobile, and jQuery charting. In this article, build the back end and front end of a polling application that uses charting to show the results of each poll.
|
Articles | 03 Oct 2011 |
| Efficient JavaScript unit testing
Users don't want to see something on your application that says,
"Optimized for XYZ browser." They just want it to work. Learn how efficient unit
testing of your JavaScript can make it easier for you to support more browsers.
|
Articles | 27 Sep 2011 |
| Using a recommendation engine to personalize your web
application
Most businesses are interested in finding new ways to drive traffic and generate revenue from their online investments. One way to address this challenge is to use a recommendation engine, which can drive visitors to your web site to explore further offerings. These engines apply a variety of patterns and analyze user habits to offer recommendations to users, and can be helpful in presenting offerings that a user might not otherwise know about. This article explains how to integrate Apache Mahout, an open source recommendation engine, with IBM WebSphere Application Server V8.0 and IBM Rational Application Developer for WebSphere Software V8.0.3.
Also available in:
Russian
Portuguese
|
Articles | 21 Sep 2011 |
| Smarter city data model standards landscape, Part
1: Core
Cities face many challenges on their path to
becoming smarter. Information exchange is particularly
challenging among city agencies. The range of
different vendor solutions deployed across agency and
departmental boundaries can cause a problem. The
solution is defining a common, standards-based
smarter city data model that determines how information is
structured and what it represents on a semantic level.
Read about the core concepts and standards that are common
across multiple smarter city domains, such as public
safety, transportation, and water.
|
Articles | 20 Sep 2011 |
| Trigger keyboard and mouse actions with your voice and xdotool
xdotool is a helpful library of instructions that allows
programmers to emulate keystrokes and mouse actions. The particular strength of the tool
comes when the keyboard or mouse is absent or in accessibility situations where the user is
not physically able to employ regular input methods. This article has two goals: first,
to provide an introduction to the use of xdotool in a Linux desktop
environment, and second, to use voice input to trigger actions typically done through
hardware input. A concluding example uses XML to store xdotool-oriented
code fragments for insertion into auto-generated dialog manager code.
|
Articles | 06 Sep 2011 |
| Add multitouch gesture support to a TouchPad-equipped laptop
Enable swipe and pinch gestures for Linux applications by analyzing synclient
program output for a Synaptics TouchPad.
|
Articles | 01 Sep 2011 |
| Moving a PHP application to DB2 from MySQL, Part 3: Convert your PHP code
Learn why to move a PHP application to DB2(R), how to plan the migration, how to execute
it, how to support it, and how to handle potential risks based on the experience of an IBM
intranet application case study. This four-part series shares lessons from a successful
MySQL-to-DB2 migration for a mission-critical PHP intranet application used by 4,000 global
users within IBM to support content production for ibm.com. Part 3 describes the
steps taken to convert the PHP code.
Also available in:
Vietnamese
|
Articles | 01 Sep 2011 |
| Polish the EPUB
In EPUB documents, you cannot detect some problems with normal validation methods.
As long as the document validates as well-formed XML and follows the EPUB standard, it can
appear to be correct but might not read correctly in an e-Reader. Examples include broken
paragraphs, bad page numbering, and spelling errors caused by OCR scanning. But you can
view and correct errors using two methods: with the EPUB editor Sigil and with PHP in
combination with SimpleXML and the Enchant libraries. Regular expressions provide the key
to efficient processing.
|
Articles | 30 Aug 2011 |
| Using AutoCAD file formats with open source libraries
Many experts use AutoCAD in engineering, design,
architecture, geography, and related fields. Combining AutoCAD data
with GIS data, such as shapefiles, to use on maps is often useful.
Learn about LibreDWG and dxflib, two open source libraries, that make the
AutoCAD DXF and DWG file formats more accessible. Create a translator tool
that writes to KML and shapefile formats and use the GDAL library to
facilitate working with GML and shapefile formats.
|
Articles | 30 Aug 2011 |
| Generate dynamic mobile web interfaces with the Dojo Toolkit
Using mobile devices to browse the web has become the rule.
As users of mobile devices increase in number,
there is a corresponding spike in the development rate of mobile applications and
mobile-friendly websites. For the mobile app developer, the main concern becomes
how to develop an app that can display on the majority of devices.
In this article, see how the Dojo Toolkit can help you create widgets for your
application that mimic the interfaces of the most popular mobile devices. The
Dojo Toolkit provides a mechanism to
create mobile web apps using Cascading Style Sheets, HTML, and JavaScript.
|
Articles | 30 Aug 2011 |
| Create a networked tic-tac-toe game for Android
Build the back end of a multiplayer, network-enabled tic-tac-toe game with a native Android front-end application in this article.
|
Articles | 23 Aug 2011 |
| Building a $36.5 million business with open source software
StudioNow proved that it is possible to build a successful technology business using
open source software. In fact, StudioNow was so successful that AOL bought the company
for US$36.5 million. Discover the decisions the company made for
technology adoption and the value of involvement in open source communities.
|
Articles | 23 Aug 2011 |
| Use PHP with Identi.ca, Part 2
Identi.ca is a popular free microblogging service that allows users to post
status messages and news. Web application developers are able to create, access,
and search these messages through the Identi.ca API. This two-part article
introduces the Identi.ca API and illustrates how you use it with PHP to create dynamic web applications.
Also available in:
Japanese
|
Articles | 22 Aug 2011 |
| Integrate the rich Internet application framework ZK with Informix to build
real-world applications
This tutorial presents a real-world example that integrates IBM Informix and ZK, a
rich Internet application (RIA) framework. Informix is a flagship IBM RDBMS product, while ZK is a
Java-based web application framework supporting Ajax applications. This event-driven framework enables
creation of rich user interfaces with minimal knowledge and use of JavaScript. ZK's unique
server-centric approach enables synchronization of components and events across the client and server
via the core engine.
Also available in:
Korean
Portuguese
|
Tutorial | 18 Aug 2011 |
| Best practices for developing Eclipse plugins
This tutorial highlights best practices when marking
information to resources using markers, and then introduces annotations and
decorators that you use to highlight markers within the workbench. By
extending extension points, you can reuse and adapt the built-in functions in
Eclipse and perform advanced resource marking, such as moving a text marker
when editing text. We discuss methods that take advantage of the plugin model,
which allows for an efficient, high performance, and integrated look and feel
plugin.
|
Tutorial | 16 Aug 2011 |
| Java development 2.0: Ultra-lightweight Java web services with Gretty
Gretty is one of a new school of ultra-lightweight frameworks made for building web services. Built on top of the blazingly fast Java NIO APIs, Gretty leverages Groovy as a domain-specific language for web endpoints and Grape's Maven-style dependency management. In this article, get started with using Gretty to build and deploy Java web service applications.
|
Articles | 16 Aug 2011 |
| Use PHP with Identi.ca, Part 1
Identi.ca is a popular free microblogging service that allows users to post
status messages and news. Web application developers are able to create, access,
and search these messages through the Identi.ca API. This two-part article
introduces the Identi.ca API and illustrates how you use it with PHP to create dynamic web applications.
|
Articles | 16 Aug 2011 |
| Develop a Spring client for Android to a JAX-RS web service
Spring, a platform used to run Java enterprise applications, provides several benefits including increased productivity and runtime
performance. Spring Android, an extension of the Spring framework, simplifies the development of Android apps. The main features of Spring Android are a REST client for Android and Auth support for accessing secure APIs. Learn to access a RESTful web service with the Spring Android REST Client.
|
Articles | 12 Aug 2011 |
| New things with jQuery, Part 1: Globalize
The new Globalize JavaScript plugin allows anyone to make their web
application instantly support over 350 countries and languages with only a few
lines of code. If your website has global customers, you need to adapt your
website to them, and not make them adapt to your website. The Globalize plugin
makes that easy, by using the power of client-side JavaScript.
|
Articles | 05 Aug 2011 |
| Awesome Audacity
Audacity is a sound-editing program with a complete
set of tools for the visualization of stereo sound channels, and filters that
allow you to easily modify select portions of the audio waveform. It is a programmable
editor, so its functionality can be extended as the needs of your project
extend. From making simple audio recordings to editing multi-channel
productions, Audacity is simply awesome.
|
Articles | 05 Aug 2011 |
| Create GPS-enabling web applications
This article walks you through building the back end and front end of a GPS-enabled web application using PHP.
|
Articles | 02 Aug 2011 |
| Manage and convert electronic publications using Calibre
Calibre, an open source application, makes it easy to convert documents
between different electronic publishing formats. Organizations can create
documents in one format and use Calibre to quickly convert them to other
formats, making those documents portable and easy for both internal users
and customers to use.
|
Articles | 02 Aug 2011 |
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