Published: 30 Mar 2017 12:49:59 +0000Copyright: Copyright 2004 IBM Corporation.
22 Feb 2017 05:00:00 +0000If you’re not familiar with graph databases, using one might sound a bit daunting. Anyone who has taken a course on graph theory can probably attest that the subject is a bit complex. But don’t let your graph theory experience (or lack thereof) keep you away from graph databases. In fact, when you use a fully-managed graph database-as-a-service, you get all of the benefits of graph databases without the complexity. This is part one of the two-part tutorial series Intro to Graph Databases.
21 Feb 2017 05:00:00 +0000About a week ago, IBM launched Quantum Experience. The cornerstone of this initiative is to make a real, working quantum computer available for anyone. This blog discusses Quantum Experience, gives the basics while trying to dwell as little as possible on Algebra or Physics and, at the end, we’ll build a simple algorithm and discuss the results.
21 Feb 2017 05:00:00 +0000In part 2 of the Intro to graph databases tutorial series, you'll explore the code behind an existing recommendation engine. Then you'll implement a feature to display recommendations on a product's page.
16 Feb 2017 05:00:00 +0000Node-RED co-creators Nick O’Leary and Dave Conway-Jones describe and demonstrate some of the new features that make it even faster to create and debug flows, as well as where they see the project heading in 2017.
29 Jun 2016 04:00:00 +0000Modularizing an AngularJS application makes the code base easier to maintain as your project grows. Learn how to modularize an existing Angular application with the webpack module bundler, and learn best practices for incorporating modules into a new project.
24 Jun 2016 04:00:00 +0000This tuning guide will help you achieve optimal performance when running MongoDB on IBM Power Systems by providing guidelines for system-level, virtualization-level and application-level tuning.
15 Jun 2016 04:00:00 +0000Refactor your Sails application from a blog API to a more generalized content management system, then use associations to define the complex relationship between a single author and many entries. You also add comments and tags to newly created content in your rapidly growing HTTP API.
15 Jun 2016 04:00:00 +0000Swagger is a useful specification for generating documentation for RESTful APIs, but its output can lack all of the detail or features you need. Find out how you can enhance Swagger's native capabilities through the use of custom extensions, tools, and templates.
07 Jun 2016 04:00:00 +0000Learn how to use OpenWhisk to write user-facing applications. This tutorial covers the basics of OpenWhisk through a simple application that you can build and expand to integrate with a Cloudant database. The sample application uses a small Node stub to allow it to be user-facing.
26 May 2016 04:00:00 +0000Build custom data visualizations with the D3 library and incorporate them in your AngularJS apps.
29 Mar 2016 04:00:00 +0000For a modest investment, our new developerWorks Premium membership program can yield huge benefits for you in terms of time and (yes) money
08 Mar 2016 05:00:00 +0000Elasticsearch is taking the full-text search world by storm by combining an easy-to-use REST API with automated cluster scaling. Get a hands-on introduction to using Elasticsearch from a command shell and from within a Java application.
27 Jan 2016 05:00:00 +0000Learn how to create partitions on a disk drive and how to format them for use on a Linux system as swap or data space. Use the material in this tutorial to study for the Linux Professional Institute LPIC-1: Linux Server Professional Certification exam 101, or just to learn about partitions and Linux filesystems for your own use.
05 Jan 2016 05:00:00 +0000Use Docker to code more productively and expand your skills more efficiently. Declutter your development environment, eliminate dependency conflicts, and reduce development and learning time by working with containerized applications.
10 Dec 2015 05:00:00 +0000Are you a PHP developer who is interested in building IoT applications? It can be difficult to get started. This tutorial will help you get started by taking you step-by-step through the process of building a PHP-powered, IBM Bluemix IoT application that subscribes to location data that connected devices send to the Internet of Things Platform service. The app then converts that data into map images by using the Google Maps API.
01 Dec 2015 05:00:00 +0000developerWorks recently debuted the developerWorks Premium developer membership program, and it offers a little bit of something for everyone, no matter your area of interest and level of expertise. With an extensive Safari digital library, conference replays and discounts, and other perks curated with you in mind, you're sure to find it worth the price.
13 Nov 2015 05:00:00 +0000Discover how Linux containers are revolutionizing software development and powering microservices to shift an entire industry. Know the requirements that are critical to success in microservices adoption and how container-based infrastructures make it easier to meet those requirements.
12 Nov 2015 05:00:00 +0000Implement user management for your Play Framework applications and put your Scala skills to work. Pablo Pedemonte takes you through building a basic Play application that handles authentication and authorization. You can even use the application code as a starter for your own Play projects to shorten user-management development time.
18 Sep 2015 04:00:00 +0000Learn how to migrate a classic LAMP application (Drupal) to IBM Bluemix.
02 Sep 2015 04:00:00 +0000Explore simple but useful examples of how the conceptual layers presented so far in this series combine to integrate information easily and seamlessly across various tools. The examples use Open Services for Lifecycle Collaboration (OSLC) vocabularies and standards, but they are equally useful for any group of participants wanting to connect information quickly to find value across data stores.
14 Aug 2015 04:00:00 +0000Learn how to choose and configure a boot manager for your Linux system. You can use the material in this tutorial to study for the LPI 101 exam for Linux system administrator certification, or to learn for fun.
13 Aug 2015 04:00:00 +0000Learn how to design a partition layout for disks on a Linux system. Use the material in this tutorial to study for the Linux Professional Institute LPIC-1: Linux Server Professional Certification exam 101, or to learn for fun.
12 Aug 2015 04:00:00 +0000Actor applications require a different style of programming from the linear approach that is used for single-threaded applications. Go deeper into structuring systems in terms of actors and messages from Scala code, using the Akka toolkit and runtime.
05 Aug 2015 04:00:00 +0000Learn how the Open Services for Lifecycle Collaboration (OSLC) community applies the concepts that are introduced in this series to collaborative software development. OSLC uses Linked Data and other Semantic Web standards to make it easier for requirements-tracking, development, and testing tools to work together throughout the software lifecycle.
04 Aug 2015 04:00:00 +0000Ed Shee, Cloud Software Specialist for IBM Bluemix, walks through a quick 3-minute demo on creating an application in the cloud with IBM Bluemix utilizing Watson Personality Insights. He shows how easy it is to provision a boilerplate -- a runtime, a service, and some starter code all bundled together.
28 Jul 2015 04:00:00 +0000Take a walk through the "small pieces, loosely joined" of the MEAN stack's testing infrastructure. No application, MEAN or otherwise, is ready for production without passing a rigorous, comprehensive test suite. See how to use Karma, Mocha, Jasmine, and istanbul, helped by PhantomJS, to test the UGLI app.
23 Jul 2015 04:00:00 +0000IBM is a longtime supporter of open source software and the open source community and is once again a prominent presence at the annual OSCON conference. This article provides an overview of IBM's activities during this year's event. You'll also get a glimpse of developerWorks Open, a new way to collaborate on and develop tomorrow's next innovations.
05 Jun 2015 04:00:00 +0000Use Object Storage v2 with a Go programming language application hosted on Bluemix. Object Storage v2 provides a highly available, robust, reliable, and scalable storage fabric that can be backed by a private cloud or the IBM public cloud.
03 Jun 2015 04:00:00 +0000Thanks to Vagrant and PuPHPet, you can easily build consistent PHP development and deployment environments that take advantage of virtual-machine technology. These open source tools work with desktop-virtualization software such as VirtualBox to help you do away with apparent bugs that result from discrepancies between systems. PHP expert Eli White shows you how to put Vagrant and PuPHPet to work for your team.
20 May 2015 04:00:00 +0000Learn how to integrate existing Apache Maven projects into the delivery pipeline in Bluemix DevOps Services and how to set up Maven projects to make them available as Bluemix DevOps Services projects.
13 May 2015 04:00:00 +0000Today's complex PHP projects often use multiple third-party libraries that in turn have their own dependencies. Find out how Composer, an open source project built in PHP for the PHP community, takes the pain out of dependency handling for your modern PHP applications.
05 May 2015 04:00:00 +0000Check out the latest almost-ready-for-prime-time boilerplates and services on IBM Bluemix, including selections from integration testing, data management, content management, application quality, and application infrastructure.
20 Apr 2015 04:00:00 +0000Dojo Mobile can greatly reduce your mobile development time while creating intuitive, rich visuals that scale well across the more popular mobile devices. In this tutorial, learn how to use Dojo Mobile's charting and gauging libraries to deliver your organization's key performance indicators to business users and managers via a mobile KPI app.
16 Apr 2015 04:00:00 +0000IBM Power Virtualization Center Express Edition (PowerVC) is an IaaS cloud solution designed to make it easier to build and manage virtual resources in a Power Systems Software Defined Environment or a cloud infrastructure. It is primarily based on OpenStack and includes OpenStack industry-standard application programming interfaces. Learn about the APIs for each OpenStack component and the tasks the APIs can help you complete.
15 Apr 2015 04:00:00 +0000Keep your PHP web applications' passwords safe from hackers. PHP continues to evolve with the web, and more web applications need to store passwords securely. In the second installment of a four-part series on the new face of PHP, learn about the new password-handling features added in the PHP 5.5 release.
08 Apr 2015 04:00:00 +0000The actor model, a long-established approach to concurrent programming, gives you an easy way to build applications for high concurrency and scalability. Learn about the actor model and start working in Scala or Java with the Akka implementation of the model.
31 Mar 2015 04:00:00 +0000In the first installment of a five-part series on data-integration standards and technologies, Brian Sletten introduces the Resource Description Framework (RDF) as the basis for a new set of standards called Open Services for Lifecycle Collaboration (OSLC). As part of the World Wide Web Consortium (W3C) Semantic Web technology stack, RDF is designed to facilitate information integration among multiple participants without the need for extensive precoordination.
25 Mar 2015 04:00:00 +0000PHP has evolved significantly since its early days as a templating language. In the first installment of a four-part series on modern-day PHP programming, PHP expert Eli White examines some of the advancements in PHP 5.3 and higher. Get up to speed on namespaces, traits, closures, generators, and more.
23 Mar 2015 04:00:00 +0000OpenStack is open source software for building public and private clouds that provide an Infrastructure as a Service (IaaS) platform. Keystone is an OpenStack subproject that provides identity services, including user authentication and authorization, for the OpenStack family of projects. This article shows how to configure Keystone's recently released domain-specific LDAP and Active Directory support.
13 Mar 2015 04:00:00 +0000In the previous Mastering MEAN installment, you used Meetup.com's RESTful API to pull in JSON that contains meeting information. This time, you'll use Meetup.com's OAuth service to provide login capabilities.
18 Feb 2015 05:00:00 +0000This article describes how to use CKEditor with WebSphere Commerce. It explains how to add custom cascading-style-sheet (CSS) so your content displays similar to your store. It also describes how to add custom fonts and responsive design templates to the palette.
16 Dec 2014 05:00:00 +0000This third tutorial in a three-part series shows how to build a low-cost plant-monitoring solution based on Raspberry Pi. In this final installment, you'll build an HTML5 application that provides a visualization of the sensor data for desktop and mobile devices. You'll create an open data API to make the data available from the Cloudant data store.
16 Dec 2014 05:00:00 +0000This first tutorial in a three-part series shows how to build a low-cost houseplant-monitoring solution based on Raspberry Pi. The solution uses IBM Bluemix for collecting and visualizing sensor data and posting updates on your social network.
16 Dec 2014 05:00:00 +0000This second tutorial in a three-part series shows how to build a low-cost plant-monitoring solution based on Raspberry Pi. Secure the Node-RED app and set up automated deployment to Bluemix in response to code changes.
28 Oct 2014 04:00:00 +0000In the fourth Mastering MEAN installment, integrate your MEAN application with Meetup.com's RESTful API. Along the way, make your web page more search-engine friendly by mixing in a bit of microdata to mark up your HTML semantically.
16 Sep 2014 04:00:00 +0000This tutorial introduces you to the Arduino microcontroller, discusses how the author has used it to solve a home-control issue, introduces some hardware add-ons to the Arduino and shows how to connect them up, and then shows how to load programs to test the hardware.
16 Sep 2014 04:00:00 +0000As developerWorks celebrates its 15th anniversary, the technical landscape has never been more exciting or complex. Myriad products, projects, technologies, and techniques abound. Let us cut through the noise and provide a quick look at what's hot right now.
16 Sep 2014 04:00:00 +0000Series author Scott Davis introduces the User Group List and Integration (UGLI) application: software to help manage user groups. Explore the basic create, retrieve, update, and delete (CRUD) functionality of the MEAN stack, and get introduced to the responsive web design capabilities of the Bootstrap framework.
16 Sep 2014 04:00:00 +0000Learn about MQTT (formerly Message Queueing Telemetry Transport), the protocol for the Internet of Things (IoT), and how you can implement MQTT on the Arduino. Explore the tools and techniques for testing and debugging problems with MQTT locally, and write an Arduino sketch that connects to the IBM Watson IoT Platform for graphing custom data.
11 Sep 2014 04:00:00 +0000In the first Mastering MEAN installment, you used a Yeoman generator to bootstrap a MEAN application. Now take a walking tour of the application, tracing the first incoming HTTP request from the server side (Node and Express) through to the client side (AngularJS).
09 Sep 2014 04:00:00 +0000Build a modern web application with MongoDB, Express, AngularJS, and Node in this six-part series by web development expert Scott Davis. This first installment includes a demo, sample code, and full instructions for creating a basic MEAN application. You'll also learn about Yeoman generators that you can use to bootstrap a new MEAN application quickly and easily.
02 Sep 2014 04:00:00 +0000Scala Future and Promise classes give you powerful ways to handle asynchronous processing, including nonblocking ways to organize and sequence events. The async / await constructs, implemented as a macro, make it even easier to write nonblocking event handling in Scala. This tutorial shows you the basic Future and Promise techniques in action, then demonstrates how async / await can convert what looks like simple blocking code to nonblocking execution.
16 Jul 2014 04:00:00 +0000This article shows you how to quickly and easily install and set up an Open edX platform in a SoftLayer environment. It also shows you how to get started configuring the environment and prepare Open edX for use.
27 Jun 2014 04:00:00 +0000Need to corral a large, disparate set of tools across development groups? Try using a notification service to create, signal, and subscribe to events. It's not hard. I'll walk you through it.
24 Jun 2014 04:00:00 +0000Explore Software Defined Networking (SDN)
17 Apr 2014 04:00:00 +0000Learn how to build a behavioral profile model for customers based on text attributes of previously purchased product descriptions. With SciKit, a powerful Python-based machine learning package for model construction and evaluation, learn how to build and apply a model to simulated customer product purchase histories. In a sample scenario, construct a model that assigns music-listener profiles to individual customers, based on the specific products each customer purchases and the corresponding textual product descriptions.
15 Apr 2014 04:00:00 +0000Clojure has the most radical approach to concurrency of all the Java.next languages. This installment delves into some of the many facets of concurrency in Clojure, including the epochal time model and software transactional memory.
04 Mar 2014 05:00:00 +0000Web applications are vulnerable to attacks from different quarters, including SQL injection, XSS, CSRF, spam, and brute-force password hacking. But it's easy to protect your PHP web application from the majority of common attacks with the security-related components available in Zend Framework 2. This article illustrates how to use these components to make your application more secure by validating form input, filtering bot submissions, rejecting comment spam, and logging unusual events.
15 Jan 2014 05:00:00 +0000IBM Entrepreneur Week is a one-of-a-kind opportunity for you to meet, interact, and connect with entrepreneurs, venture capitalists, industry leaders, and academics from around the world. If you're a startup or entrepreneur, join us onlne for our inaugural IBM Entrepreneur Week, 3-7 Feb 2014. There will be events taking place online and in locations worldwide, including face-to-face and virtual mentoring sessions, a women entrepreneur-focused event, and a LiveStream broadcast of the SmartCamp Global Finals in San Francisco.
13 Jan 2014 05:00:00 +0000This article proposes a new way to construct Linux and Windows images for private clouds built with the OpenStack cloud operating system. Current image-creation methods for OpenStack environments are cumbersome and time-consuming. The authors present an online, self-service method that makes image construction faster and easier for operators and end users of private clouds.
17 Dec 2013 05:00:00 +0000Explore the latest methods for extracting structured information from the web. Using Ruby script examples, author M. Tim Jones demonstrates scraping technology and the use of web APIs for targeted data retrieval.
12 Dec 2013 05:00:00 +0000This article presents OpenStack Block (Swift) and Object (Glance) storage, explains how they fit into the overall architecture, and shows how they operate. It illustrates the tools with insight into what it takes to install, configure, and use the components.
12 Dec 2013 05:00:00 +0000Part 1 of this series introduces the basic approaches and algorithms for the construction of recommendation engines. This concluding installment explores some open source solutions for building recommendation systems and demonstrates the use of two of them. The author also shows how to develop a simple clustering application in Ruby and apply it to sample data.
12 Dec 2013 05:00:00 +0000Most large-scale commercial and social websites recommend options, such as products or people to connect with, to users. Recommendation engines sort through massive amounts of data to identify potential user preferences. This article, the first in a two-part series, explains the ideas behind recommendation systems and introduces you to the algorithms that power them. In Part 2, learn about some open source recommendation engines you can put to work.
03 Dec 2013 05:00:00 +0000This article outlines the benefits of an industry-wide notation to express the rules for representing visualizations. It highlights one particular notation called VizJSON, which is based on Leland Wilkinson's The Grammar of Graphics approach for visualization.
02 Dec 2013 05:00:00 +0000OpenStack is a popular open source cloud computing project promoted by IBM and other industry leaders. This overview presents the overall architecture, the function of the individual modules, and their interactions. Other articles in the series will detail various OpenStack components.
19 Nov 2013 05:00:00 +0000Big data in its raw form rarely satisfies the Hadoop developer's data requirements for performing data processing tasks. Different extract/transform/load (ETL) and pre-processing operations are usually needed before starting any actual processing jobs. Oozie is a framework that helps automate this process and codify this work into repeatable units or workflows that can be reused over time without the need to write any new code or steps. Learn how Oozie can be used to create different types of workflows.
12 Nov 2013 05:00:00 +0000Apache Thrift is a framework that enables scalable cross-language development, resulting in unambiguous communication among components in cloud environments. This article introduces the ideas around Thrift (an interface definition for remote procedure call with multilanguage bindings), and then demonstrates Thrift in a multilanguage client and server application.
12 Nov 2013 05:00:00 +0000Authentication and access control are critical to keep your web application secure. Sentry 2 is a framework-agnostic authentication and authorization system written in PHP. It provides built-in methods for many common authentication and authorization tasks, allowing you to efficiently and securely develop public-facing PHP web applications.
28 Oct 2013 04:00:00 +0000Apache Lucene and Solr are highly capable open source search technologies that make it easy for organizations to enhance data access dramatically. With the 4.x line of Lucene and Solr, it's easier than ever to add scalable search capabilities to your data-driven applications. Lucene and Solr committer Grant Ingersoll walks you through the latest Lucene and Solr features that relate to relevance, distributed search, and faceting. Learn how to leverage these capabilities to build fast, efficient, and scalable next-generation data-driven applications.
22 Oct 2013 04:00:00 +0000If your Linux computer fails to boot after a kernel upgrade, disk swap, or other system change, you're not helpless. The Grand Unified Bootloader (GRUB) gives you ways to control the boot process and recover. Or, if necessary, emergency boot disks that you create with an external tool can come to the rescue. Learn procedures and GRUB commands that can help you boot in problem situations, and find out about a life-saving external tool for BIOS-based systems.
19 Sep 2013 04:00:00 +0000IBM is a regular supporter of the JavaOne conference, both as a sponsor and as a source of technical presenters. If you plan to attend JavaOne 2013, don't miss your opportunity to glean invaluable knowledge from IBM's Java experts and to learn about their vital contributions to the Java ecosystem. This article gives you an overview of the activities that the IBM team is involved in during the week of JavaOne in 2013.
03 Sep 2013 04:00:00 +0000The Java.next languages
03 Sep 2013 04:00:00 +0000R is a flexible programming language designed to facilitate exploratory data analysis, classical statistical tests, and high-level graphics. With its rich and ever-expanding library of packages, R is on the leading edge of development in statistics, data analytics, and data mining. R has proven itself a useful tool within the growing field of big data and has been integrated into several commercial packages, such as IBM SPSS and InfoSphere, as well as Mathematica. This article offers a statistician's perspective on the value of R.
03 Sep 2013 04:00:00 +0000By web logic, content is king; but for mobile users, interaction rules. Static information design is out for mobile apps, and gamification is in. This month Andrew Glover concludes his introduction to Android mobile development by adding a multiple-choice quiz feature to the example app, Overheard Word, introduced in a previous article. Then he shows you how to generate a digital signature and publish and promote your signed app on Google Play or Amazon Appstore for Android.
27 Aug 2013 04:00:00 +0000Server clustering has become commonplace for highly scalable Java enterprise application development, but application-level server-cluster awareness is not currently part of Java EE. In this article, Mukul Gupta and Paresh Paladiya show you how to leverage two open source projects, Apache ZooKeeper and LinkedIn's Project Norbert, for server-group coordination in distributed enterprise Java applications.
21 Aug 2013 04:00:00 +0000Redis is a key-value NoSQL datastore solution. Spring Data Redis is a Spring portfolio project that helps Java
16 Aug 2013 04:00:00 +0000LyX is a graphical tool, with a familiar drop-down and content-driven menu system, for writing and editing LaTeX documents. TeX and its higher-level macro language, LaTeX, are powerful document markup languages that are the de facto standard for Linux
13 Aug 2013 04:00:00 +0000Machine-generated log data is valuable in locating causes of various hardware and software failures. The information derived from it can provide feedback in improving system architecture, reducing system degradation, and improving up-time. Recently, businesses have started using this log data for deriving business insight. Using a fault-tolerant architecture, Flume is a distributed, service for efficiently collecting, aggregating, and moving large amounts of log data. In this article, we will learn how to deploy and use Flume with a Hadoop cluster and a simple distributed web service.
09 Aug 2013 04:00:00 +0000Data science combines mathematics and computer science for the purpose of extracting value from data. This article introduces data science and surveys prominent open source tools in this rapidly growing field.
08 Aug 2013 04:00:00 +0000What if you could get instant feedback on the health of your software system with every change applied -- not only to the software application, but also to the database, infrastructure, and configuration? In this final Agile DevOps installment, DevOps expert Paul Duvall helps you set up a DevOps dashboard by using the open source CanaryBoard tool. The dashboard reveals the state of the entire software system under development -- from check-in to production -- at a glance.
06 Aug 2013 04:00:00 +0000Learn how to use Bootstrap to kickstart websites and web applications, including mobile-friendly ones. Bootstrap, which is based on the LESS project, was developed by Twitter's internal engineers to provide a consistent framework for web application UIs.
06 Aug 2013 04:00:00 +0000Take the pain out of test automation with Selenium and Cucumber, by learning to write tests in simple feature files and drive them through your browser with the flip of a switch. This article is a hands-on introduction to setting up a test automation framework with Selenium and Cucumber, creating a test suite for single-page web applications, and running tests across multiple web and mobile browsers via Selenium Grid.
30 Jul 2013 04:00:00 +0000The Java language suffers from intentional limitations in its extension mechanisms, relying primarily on inheritance and interfaces. Groovy, Scala, and Clojure offer many more extension alternatives. This installment further explores Clojure's use of protocols as an extension mechanism.
18 Jul 2013 04:00:00 +0000Learn how to use LESS to write readable and maintainable Cascading Style Sheets (CSS) for modern websites. CSS makes the terrible old days of layout tricks with tables and invisible images a dim memory. But CSS is still unfriendly, and several initiatives tried to tame it for developers. One of the best is LESS, which extends CSS with dynamic behavior such as variables, mixins, operations, and functions. LESS is a CSS-like language that compiles seamlessly into CSS either on the client side or through server-side preprocessing.
18 Jul 2013 04:00:00 +0000Syntactically awesome stylesheets (Sass) is a meta-language and cascading stylesheets (CSS) preprocessor. Understanding Sass principles is your key to faster, more efficient CSS development. Sass provides simple, elegant, and robust syntax for CSS so you can create manageable stylesheets. Learn the basics of using Sass to improve the stylesheets for your website in this introduction.