OSCON 2009 Speaker Presentation Files

Presentation files will be made available as we receive them from the speaker. Most of the time this doesn't happen until the session has ended. Check back if you don't see the file you're looking for—it might be available later! (However, please note some speakers choose not to share their presentations.)

Also, check out the presentation files from the 2008 edition of OSCON.

Design patterns describe common problems in software development, but many people believe that the GoF book demonstrates the best ways to implement these patterns. Dynamic languages provide more facilities than C++ or Java; this session shows alternative implementations of design patterns using dynamic languages (Ruby and Groovy).
Using the <video> tag in HTML5, developers can do all sorts of things that are hard or impossible with plugins. In this presentation, Mozilla's Mark Surman and Asa Dotzler paint a picture of the open video future and demo the cool stuff you can do with web video when it's properly integrated with a page.
This talk will be a survey of concurrent programming constructs which are currently available in some programming language or library. We will look at programming model being presented, as well as examining some of the implementation challenges for the various models.
A recent survey conducted by the Ubuntu Server community jointly with Canonical and Redmonk delivers some great insights on why more and more enterprises are choosing Ubuntu Server Edition for their deployments and what workloads are being used. This talk will discuss the survey findings and propose some conclusions.
Rails caching is difficult and complicated. It takes some work to set it up, but it's even harder to make sure you always clear the right cache when data gets changed. This session demonstrates how to build an automatic generation-based action caching mechanism built on memcached that can handle edits from any angle while guaranteeing that users never see stale data.
The current Administration talks the talk in terms of its adoption of new technology solutions, access to information, and the call for transparency and increased citizen participation. But can it walk the walk? This keynote will address how open source advocates can help the Federal Government unlock the innovative potential of the open source development model.
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Apps for America Presentation [ZIP]
Apps for America Paper [PDF]
New Technology is crashing the gates of Washington, DC as a new administration begins to find its legs. Open Source developers are the key to making a lot of this change happen and we've got to move fast and work together in order to do it right. This talk is about strategy-- how can open source developers change their government?
In difficult financial times, all businesses are looking to do more with less. Automating repetitive tasks with computers is one way to do this. This tutorial will discuss how to use open source tools to implement workflow using real-world examples.
Quickly, accurately, and reliably deploying new systems, across the entire spectrum of production, test, and development systems, is a constant challenge for system administrators and developers. We leveraged Cobbler and Puppet to overcome these challenges and will show attendees how they can use Cobbler and Puppet to quickly, accurately, and reliably deploy new systems.
Infrastructure is code - the separation between how you manage your infrastructure and how you build your applications is disappearing. Adam Jacob, CTO of Opscode and primary author of Chef, will teach you what this means in practice - through showing how to deploy real-world applications with Chef on EC2.
Join the authors of “OpenSolaris Bible” for a tutorial in becoming an OpenSolaris power user. Learn about ZFS, DTrace, FMA, SMF, and more.
Sure you it's easy to throw a script over the fence for your users, but how do you deal with maintenance, testing, packaging and distributing your scripts? This talk will cover best practices for python scripting including any changes needed for version 3.
One of the most commonly mentioned benefits of open source is: "Users can fix bugs themselves!" But what if you aren't a programmer? This talk will take non-programmers through the basics of searching bug reports, filing good bugs, tracking down what's causing a bug, and maybe even fixing it yourself, all without any prior programming experience.
The end of "scale-up" computing is near. The coming wave of web-scale data is too big to justify exponentially increasing hardware costs for decreasing returns. Apache's "Cloud Stack" (Hadoop, Lucene, HBase, etc) is enabling Visible Technologies to move from a non-scalable MS-exclusive platform to a large cluster processing millions of pieces of content a day.Here's what we learned.
In this tight economy, are you looking for a way to create a multi-blog portal for your company or organization without spending a zillion dollars? This talk will introduce how you can create a powerful, custom-branded blog portal supporting blogs and podcasts using the open source WordPress MU.
What would you do if you were tasked with building a Twitter clone which was highly scalable, made from open source components and deployed in this infamous thing we call the cloud?
This talk will tell the story of the the FreeBSD project which started from the open-source release of 4.4BSD-Lite from the University of California at Berkeley. The FreeBSD project patterned its initial community structure on the development structure built up at Berkeley.
This session details how developers can use Mule -- an open source enterprise service bus (ESB) -- to develop, deploy and integrate composite applications on both sides of the firewall, and how Mule can work with complementary technology to address virtualization concerns.
Ubuntu One isn't just a set of services for Ubuntu, it's a platform for you to build your own services too. Stuart Langridge explains the APIs Ubuntu One offers to developers and shows some examples of applications you could build that take advantage of storage in the cloud and synchronised databases for your apps: build your own on the desktop or the web to work collaboratively with Ubuntu One.
This talk provides a tutorial on creating compilers in Parrot using the Parrot Compiler Toolkit. It walks through the process of creating a parser, building an abstract syntax tree, and generating executable output.
Learn how to create your own Linux machine images (AMIs) for running on Amazon EC2 (Elastic Compute Cloud) customized with your choice of software packages and application software configured to your liking. Use the latest open source software to build custom images from scratch in a secure, automated, reproducible process. Discover when to use a public image with automatic customization at boot.
Cassandra is a third-generation open source distributed database that marries Bigtable's rich data model with Dynamo's aggressive simplicity to produce a uniquely compelling alternative to traditional relational databases.
Clojure is a functional programming language that runs on the JVM and features great performance and innovative concurrency support.
CMake is a popular cross-platform, open-source build system used by KDE and many other projects. CMake builds software using a set of simple platform independent configuration files. CMake generates native makefiles and workspaces targeted many popular compiler environments. CMake is actually a family of tools that can be used to build (CMake), test (CTest/CDash) and deploy (CPack) software.
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Computational Journalism Presentation [PPT]
The era of traditional journalism is giving way to something else. We think that something else is Computational Journalism. CJ recognizes the need for internal production and for public-facing news delivery innovations. What journalists provide in terms of services, interfaces, and business models are in flux. To settle things, smart experiments (often using Open Source APIs) are critical.
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Conferences for Beginners Presentation [FILE]
While the OSCON conference materials are a great resource, much of the benefit from OSCON comes from the hallway track. This talk will educate first-timers on how to get the most out of OSCON.
Dynamic content created by and targeted at consumers is fuelling today’s web traffic growth and driving the evolution of the software stack. This evolution is a reversal of trends seen 10 years ago where the enterprise was the driving force in software development. The web is in the driver’s seat.
Everyone agrees that we need coding standards, but they often overlook the need to define a naming standard for thier SQL and database related items. This talk we not be a top-down explination of "the right way to do it", but rather we'll explore the key issues you need to be aware of, from all sides, and help you determine the right standards for your organization.
Mozilla's open source crash reporting system premiered in Firefox 3.0. Combining the Google Breakpad and Mozilla Socorro projects, Mozilla has created a system that allows millions of client applications to report crashes back to a central location for analysis. This talk is intended for people interested in how the new Firefox crash reporting works and how it is applicable to other projects.
Apache CouchDB can serve complete web apps, without a middle-tier application server. Because these apps can be deployed to any running CouchDB node (including user's local machines), they present potential for end-user innovation, but because of view source but also through peer based replication. We'll learn to use the CouchApp JavaScript and HTML framework to build sharable applications.
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Django in the Real World Presentation [PDF]
There's plenty of material (documentation, blogs, books) out there that'll help you write a site using Django... but then what? You've still got to test, deploy, monitor, and tune the site; failure at deployment time means all your beautiful code is for naught. This tutorial examines how best to cope when the Real World intrudes on your carefully designed website.
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Doing Perl Right Presentation [PDF]
You already know some Perl. You've read a book, written a few scripts, maybe even a module, but are you sure you're doing it right? Languagues and techniques evolve over time, and Perl is no exception. This detailed tutorial covers many of the best modern and practical techniques in Perl, including Moose, autodie, Devel::NYTProf, Devel::Cover, PAR, Perl::Critic and more.
An engaging, frank discussion of the job interview, its failings, and how to make it work for all involved. Effective interviewing reframes the interview as what it really is: The candidate's first day on the job. This session, aimed at the specific needs of the technical professional, shows how manager and candidate must work together for their common benefit.
The open source ElectionAudits software was used in Boulder Colorado's groundbreaking election audit in 2008. Recent advances in auditing practices can help increase confidence in elections. This new Django-based app ties together voter-verified paper ballots, batch reporting, verifiably random selection of batches, hand counts, and statistical analysis. Come, and help audit in your state!
Microsoft External Research builds bridges between academia, industry, and government to advance computer science, education, and scientific research. Modern science and academic research increasingly relies on integrated information technologies and computation to collect, process, and analyze complex data.
This talk will introduce Erlang, expanding on what the hype is all about. It will provide a high level technical overview, looking at its concurrency model and distribution models, software upgrade during runtime and scalability on multicore. It will describe its ever expanding community and domains of use, with examples on open source applications, commercial products and research projects
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Even Faster Websites Presentation [PPT]
Steve Souders, author of High Performance Web Sites and creator of YSlow, discusses his new insights into faster web pages including how to load JavaScript asynchronously, optimizing CSS, and sharding resources across multiple domains.
This talk will cover ways of configuring a Linux distribution to run efficiently on slow CPU, low memory machines. You can get big performance gains from areas such as: * speeding up the boot process * options for lightweight window managers * performance tools that can help you find bottlenecks * tuning your kernel * Finding lightweight alternatives to big applications
Squeak Smalltalk is wholly unlike any other open source programming tool you've worked with - and mostly in good ways. Unfortunately, it's the bad ways that make the first impression. This hands-on tutorial will help you get past the unfamiliar and the unwieldy so that you can take advantage of the elegant and productive environment that lies underneath.
The term "Folk Computing" was coined 20+ years ago to describe how people learn to program by copying and experimentation. Learn how open source licenses, hosted development environments, and other folk programming concepts lower barriers to entry and help people get up to speed as coders. We'll also be showing off some modern folk programming platforms, from Yahoo Pipes to the OLPC and beyond.
Sphinx Full Text search engine became increasingly popular over years powering search for number of Alexa 100 sites as Craigslist and NetLog. Sphinx combines powerful full text search features with ease of use and high performance. Being specially designed for indexing database content it is natural fit for modern database powered web sites.
This talk argues that fundamentalist functional programming-that is, radically eliminating all side effects from programming languages, including strict evaluation-is what it takes to conquer the concurrency and parallelism dragon.
Come learn the fundamentals of how to leverage Gearman, the open-source, distributed job queuing system. Originally designed to scale LiveJournal.com, Gearman is now faster than ever and can help you build your own scalable applications. Gearman's generic design allows it to be used as a building block for almost any use - from speeding up your website to building your own Map/Reduce cluster.
This tutorial will show you how to get started with Gearman, the flexible job queuing system used to power websites such as LiveJournal and Digg. We'll cover common architectures, installation, APIs, and deployment. A few use cases will be described and built, including a Map/Reduce cluster and database-driven URL mining application.
Leslie Hawthorn and I co-present this talk for beginners who are interested to getting involved but don't know where or how to start. We cover the basics of: -why you might want to get involved -what you can get out of participating -more than coding is needed -how to chose a project -how to get started -etiquette of lists and other communication -dos and don't of joining a community
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Git 101 Presentation [PDF]
Git is a new distributed version control system that is fast, flexible, works offline and supports powerful local branching and easy merging that encourages non-linear workflows and makes developers far more productive and efficient. This tutorial will introduce you to Git, rid you of your SVN sins, and teach you how to become more efficient and productive as a programmer.
ERP is an area where FOSS programmers haven't particularly excelled at challenging the dogmas of traditional IS. In fact, the “monolithic ERP” challenges the very nature of FOSS and the diversity of it's communities. p2ee is a back-to-basics approach, based on the REST architectural style and new Web2 technologies.
So you have ambiguous task to optimize Web Site Performance and you have few resources and time available. How to make the biggest impact with them ? This presentation gives you insight in methodology show practical tips and tools for web site performance optimization.
Winners of the Google O'Reilly Open Source Award will be announced during this fun evening event.
Design is 80% science and 20% art. This talk dives straight into the science to give you the techniques to create your own interfaces and demystify design. From using the golden ratio in layout and Fibonacci numbers in typography, to brand design and art direction, it covers it all in simple, tasty, bite-size pieces.


This talk presents ways in which people can become active contributors to Perl 6 and Rakudo Perl. It presents the details needed to quickly become a Rakudo Perl and Perl 6 library developer.
Hacking the Western Digital Mybook II to transform this elegant external hard drive into a bare-bones, extremely flexible hardware platform, in a revival of what we did with the Linksys WRT54G a few years ago. Intermediate system skills (particularly Perl and Shell) recommended, along with imagination and the desire to have fun!
The Alternative PHP Cache is an opcode and variable cache for PHP that can be used to improve PHP performance, scalability, and end user experience.
PostgreSQL 8.4 is the first Open Source database management system to handle trees and lists using SQL:2008-compliant Common Table Expressions and Windowing functions. You'll learn how these work, see intriguing examples, and walk out ready to use them to your advantage.
The Urban Forest Mapping Project will map every tree in San Francisco using online input from community members as well as official data, and calculate the ecosystem services the urban forest is providing. This web-based, open-source application makes use of crowd-sourced data from "citizen scientists" to help us use our urban natural resources to increase sustainability.
Moblin is a revolutionary user experience for mobile devices. This talk will give a brief overview of Moblin for Netbooks and Nettops and then focus on the process of building an application powered by Moblin Core technologies.
Eclipse is an open source IDE that has available extensions for a variety of languages and tools. How are these extensions created? This tutorial will cover how to install eclipse extensions ("plug-ins"), how to write your own including using the built-in wizards, how to write help for your plug-ins, and how to publish/package them so that others can easily download and use your plug-ins.
If you had five minutes on stage what would you say? What if you only got 20 slides and they rotated automatically after 15 seconds? Would you pitch a project? Launch a web site? Teach a hack? We’re going to find out when we try our first Ignite event at OSCON. Damian Conway is scheduled to end OSCON Ignite in style. Want to present at Ignite?
FOSS can be seen as a new kind of legal system that facilitates sharing rights in code. Viewed in this way, FOSS can benefit from greater public knowledge of code origins and licensing rules. My talk will focus on practical guidance for projects seeking to improve legal certainty in the code they write and use. I will conclude with some longer-term institutional proposals.
wiiMote headtracking demos are a YouTube sensation and the technology is making its way from demos to production games and scientific visualization. Learn the theory behind wiiMote headtracking, see it in action, and imagine what you might do with it.
Imad Sousou, Director of Intel Open Source Technology Center will present the technology vision and direction for Intel’s overall Open Source efforts, including Mobility, Virtualization, Power, and Performance.
Python is an interpreted, cross-platform, object-oriented programming language that is popular for a wide range of applications, one of which is Internet programming. This tutorial introduces current Python programmers to three distinct areas of Internet programming, each in self-contained one-hour lectures with a demonstration of code following each lecture topic.
Handheld is the new personal computer. The open sourced handheld plaftform, Android SDK, presents a great opportunity for programmers all around the world to make an impact on education and entertainement. This session will take you through the Animation and OpenGl capabilities of the Android SDK to get you started on a path of innovation.
In this talk Kyle Rankin will provide an introduction to performing forensics analysis on Linux machines using the popular Sleuthkit tools with their easy-to-use Autopsy web-based front-end. The talk will cover basic concepts for a forensics investigation, and at the end there will be a demo with a compromised Linux image.
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Introduction to JRuby Presentation [PDF]
JRuby is Ruby on the Java Platform, so it brings the advantages of Ruby to the JVM and the advantages of Java to Ruby. This session shows Ruby syntax and lots of integration techniques with Java, including building Swing-based UI's using Swiby and how to unit test Java code with JRuby.
An introduction to the Seaside Smalltalk web development framework. Presumes basic knowledge of object-oriented programming using Smalltalk GUIs, such as Squeak or VisualWorks. Covers Seaside concepts of components and html templating, including continuations for advanced callbacks and some persistence solutions.
IronRuby is almost at 1.0! Come and see how IronRuby is used in .NET programs, how well it performs, and how conformant it is.
Learn how the Groovy language can help you enhance your testing experience of Java applications.
Using JRuby, apps created with Ruby frameworks like Rails or Merb can now be deployed to Google's highly scalable infrastructure. This talk, will provide an overview of App Engine, with attention to current features and apis. We will also show some demos, including deployment to the production environment, and provide some insight into (and best practices for) using the App Engine Datastore.
For programmers raised on open source who want to delve into lower-level mechanics of C programming, this tutorial gives a complete overview of what it takes to jump into the innards of your favorite open source projects. From MySQL to Perl 5 to the Linux core, C is the foundation of many of the most widely used open source packages. Learn the language, learn the tools, and start contributing.
Study gains and losses in how Launchpad, a collaboration web service for the open-source community, used a Python component library from Zope 3 to help manage a large project. Discuss when the approach might be appropriate. Code examples include automatic REST web service generation. Demonstrate how the component architecture might be leveraged in popular frameworks such as Django.
Semantic Technologies provide a simple, standardized methodology for representing, combing and sharing data and serve as the foundation for creating communities of open data. These technologies are both easy to learn and easy to use. This tutorial will introduce you to semantic programming using a variety of open source tools and programming techniques that you can use on your projects today.
How do you choose the right filesystem for your database management system? Administrators have a variety of filesystems to choose from, as well as volume management and hardware or software RAID. This talk will examine how different the performance of filesystems really are, and how do you go about systematically determining which configuration will be the best for your application and hardware.
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The Linux System and Network Performance Course teaches systems administrators practical methodologies for monitoring systems using standard system tools. The course breaks performance into 4 functional components: CPU, Memory, I/O, and Network.
The Mozilla project has six test frameworks with over 100,000 combined tests. For the Fennec mobile Firefox project, we coerced those frameworks to run on Maemo, Windows Mobile, and Symbian platforms. We will cover the challenges we faced and the lessons we learned. Come find out how we did it and how to apply these ideas to your next mobile project.
MariaDB is a fork of Sun's MySQL product. This talk will present how MariaDB is both similar to and different from MySQL, in both social and technical senses.
Know Javascript, HTML, and CSS? Interested in music, and exploring what's possible when you combine the power of Mozilla, add-ons, and music on the web? Songbird, a desktop media player powered by Mozilla's XULRunner/Firefox platform, allows you to build Javascript extensions to create new digital media mashups using open APIs, and media web services.
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Mastering Perl Presentation [PDF]
Go beyond the syntax and idioms of Perl to manage your code base so it doesn't manage you. Show your Perl code who is in charge through benchmarking and profiling, configuration, logging, and fixing third party modules.
Besides MySQL release officially available from Sun there are multiple patches and extensions developed by community. In this Presentation we will look into them to see what extra features patches from Google, Percona and OurDelta offer and how can you use them to make your MySQL life more fun.
A graph db stores data in a network structure rather than in relational tables. This model is well suited for many web use cases such as tagging, metadata annotations, social networks, wikis and other network-shaped or hierarchical data sets. This talk will introduce Neo4j: a high-performance, transactional open source graph db, which frequently outperforms RDBMSs with >1000x for such use cases.
Software programming has come a long way for students and younger children since the days of Logo. Syntax has been replaced with connecting blocks and the triangle turtle has been replaced with custom artwork children create themselves. Now, multi-threading and event processing are easier to teach children than functions, and this session discusses these ideas as well as so the edge of kid code.
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NPR, Open Content and API's Presentation [PPT]
It has been a year since NPR's public API launched (announced at OSCON 2008). This session will explore how the marketplace has changed for media organizations over the last year, how API's have played a role in that change, and what the future looks like for NPR, its API, and other media organizations.
We have embarked on a mission to share more of what we do on the development side of The Times. So far, we’ve done that via conference presentations, open-source software, blog posts and (most recently and probably most importantly) our APIs. We see our site as more than just a source of news and information: it’s a platform on which news and information become building blocks.
The age of Big Data demands open-source tools that move beyond storage towards analytics: tools to turn terabytes into insights. R is an open-source language for statistical computing and graphics, and an extensible, embeddable tool for the analysis of large data sets. In this session, I showcase R's power by building predictive models for Brazilian soybean harvests and baseball slugger salaries.
Many people view Open Source documentation as something they have to suffer if they want to use a free product. As Open Source code spreads faster and further in the great, wide world, we need to up the ante on documentation as well to keep fanning the flames. We'll take a look at how one community, the Drupal project, is trying to raise the bar and how others can learn from their ups and downs.
As open source became mainstream and open source grew in the offering of applications, frameworks and system software, telephony platform and telephony frameworks in the open source did not exist until recently. In this session we will show you the how to of developing Linux telephony applications using Ofono and share with you the under-the-hood workings of a cellular telephony software stack.
Now that everyone and their dog has some sort of a digital camera, what are you supposed to do with it, and how? What real solutions are out there that aren't just for the subfenestrated?
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Parrot Architecture Presentation [PDF]
The Parrot virtual machine hit 1.0 in March of this year, with a second production release (1.4) this week. A virtual machine like no other, Parrot targets dynamic languages such as Perl, Ruby, Python and PHP. This talk explains the overall architecture of Parrot and the theory behind that architecture.
Nearly all Web Applications need persistent solutions to be effective. For Perl and Ruby, the choice is generally "use an Object-Relational Mapper to put data into an SQL database", but with Smalltalk's object model, pure-object storage is also available as an option. We'll look at ORM and Object solutions for web apps built with Seaside, including a few commercial solutions like GemStone/S
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PHP Code Audit Presentation [PDF]
In this laboratory, we will carry out a safety audit of an Open Source web application. We will work on a real application. The laboratory will end with the handing over of the report to the authors of the application so they can have an outside view on the safety of the application.
You can control devices in your home from your computer with no new wiring. This session covers controlling lights, bells, and motors using open source software. Wireless remotes can also control devices. Sensors can provide information about motion, sunset, temperature. Capturing caller id and auto-dialing is also covered.
SQL is from Mars, Objects are from Venus. This talk is for software developers who know SQL but are stuck trying to implement common object-oriented structures in an SQL database. Mimicking polymorphism, extensibility, and hierarchical data in the relational database paradigm can be confusing and awkward, but they don't have to be.
No one likes the sinking feeling of having lost data --- pictures, documents, source code, or video that is gone and can never be fully recreated. Though prudent archiving and risk analysis, it is possible to avoid data loss in all but the most extreme circumstances. Data longevity is also an important aspect of archiving, including the use of open data formats.
Although web applications are catching up with their desktop counterparts, there is still ground to cover. Prism, a project initiated by Mozilla Labs, is an attempt to bridge this gap. In this talk, we explain why Prism represents a superior web client for running web applications. We use a live demo to show how easy it is to use Prism to customize a popular web app.
A pervasive elitism hovers in the background of collaborative software development: everyone secretly wants to be seen as a genius. In this talk, we discuss how to avoid this trap and gracefully exchange personal ego for personal growth and super-charged collaboration. We'll also examine how software tools affect social behaviors, and how to successfully manage the growth of new ideas.
Inspekt is a filtering and validation library for PHP5. With a focus on ease of use, Inspekt makes writing secure PHP applications faster and easier. This talk covers the Inspekt library and the "input cage" concept, best practices when utilizing the library, and how to integrate Inspekt with existing applications and popular frameworks.
This tutorial introduces the audience to the testing of modern web applications using PHPUnit for testing the backend components and Selenium for end-to-end testing of the whole application as well as measuring and controlling other aspects of software quality throughout a project's lifecycle.
Risk and chance play a huge part in our daily lives, yet the human brain doesn't come pre-loaded with the right software to make intuitive decisions about them. This talk is to provide some illumination in the basic principles to help you understand and quantify risk, and to introduce you to the open-source language R, an essential tool for finding statistical solutions to your own problems.
To most users, unreleased software is non-existent software. Even when the source code is freely available, most users desire, or even require, releases which are provided and blessed by the project. In this talk, I'll discuss release management, who does it, how it's done, and what happens when things go wrong.
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Request Tracker Boot Camp Presentation [PDF]
Request Tracker (RT) is an enterprise-grade ticketing system. It's designed to help your organization track what needs to get done and what still needs doing. From basic customer service to advanced back-office workflows, RT is flexible enough to keep your processes smooth and effective. This tutorial will cover deployment and day to day use of RT as well as basic customization.
This talk will give an overview of Rubinius, an alternative Ruby implementation with a C++ VM, Ruby standard library, and Ruby compiler. It will also detail major recent changes like switching away from stackless execution and improvements in the core library data structures, garbage collector, compiler, and JIT assembler.
Few applications are architecturally simple. As soon as you grow, you find yourself using multiple subsystems and machines to scale, creating new headaches in configuration management. Help is at hand! This tutorial introduces Chef, a modern Ruby-based open source approach to systems integration. Chef lets you manage your servers by writing code, not running commands.
Internet traffic spikes aren't what they used to be. It is now evident that even the smallest sites can suffer the attention of the global audience. This presentation dives into techniques to avoid collapse under dire circumstances. Looking at some real traffic spikes, we'll pinpoint what part of the architecture is crumbling under the load; then, walk though stop-gaps and complete solutions.
Scaling is a perennial problem. One day you are happily serving 10,000 users and suddenly that pesky CNN picks you on you and you have to deal with a million users. It isn't all about putting the latest hardware, more disk or more RAM. Scaling is a subtle art of discovering pain points in the application and using various Open Source software and technologies to get you to where you want.
This talk will present the 2008 results from the Scan Project, a Department of Homeland Security open source initiative run by Coverity, designed to improve the quality and security of popular open source projects used to power government and private websites.
Perception is as important as reality. In this multifarious talk, I'll introduce some of what I have learned about cognitive psychology, exploring topics such as change blindness and ambient signifiers, and I'll show some real-world examples that demonstrate the profound impact human behavior can have on security.
Keeping track of configuration changes between hundreds of servers is a challenging task not to mention keeping a history of all the changes that were made. This session focusing on utilizing open source technology to not only help you manage your servers but it also promote teamwork and self documentation. I'll focus on how the OSU Open Source Lab uses cfengine and git to manage their servers.
Sex and Design Axioms describes the minimal rule set for designing interfaces: the foundational concepts that are required knowledge for designers and engineers to create usable and elegant interfaces. It is the analog for The Elements of Style by Strunk and White on user interface that encompasses layout, interaction, visual design, and prototyping tenets.
XMPP is a cheap, low bandwidth alternative to the web in bandwidth poor countries. This talk will show how we have used XMPP networks to address social problems like gansterism, drug abuse and HIV AIDS.
In 10 years of fixing other people's SQL databases, I've noticed that the less the original developer knew, the more complex the databases are ... and the more complex the problems. Here I offer a refreshing approach for simple SQL database design.
The GeoDjango project provides a set of extensions to the python Django framework that allows for the easy and rapid development of spatially enabled applications. Using GeoDjango's model-driven design methods, PostGIS's spatial database extensions to PostgreSQL, and OpenLayers, we will explain and demonstrate how to build powerful spatially enabled applications.
Have you ever had a manager or legal department slow down your project why they try to figure out software licensing issues? This session will arm you with all the key information you need to join the conversation and recognize when your lawyer is trying to pull a fast one, versus when you’re facing a legitimate challenge.
What's it like to be a woman in an open source project that's 99% men? What's it like to be a woman in a project that's 75%... women? Kirrily Robert, who has worked on both kinds of projects, will talk about the differences, and what we can learn from majority-female open source projects.
Devel::NYTProf has revolutionized profiling perl code. Making accurate and detailed performance data available for the first time, and in richly annotated and inter-linked HTML reports. Come and learn how NYTProf can shed light on the performance hot spots in your code.
The OpenSolaris Web Stack is an open source project consists of popular open source web infrastructure (known as LAMP or SAMP) technologies, such as Apache HTTPd, PHP, Python, MySQL, lighttpd, as well as GlassFish and Tomcat. As a fully integrated in the OpenSolaris operating system, Web Stack delivers close integration with OpenSolaris innovations such as DTrace, ZFS, SMF and RBAC.
Nowadays, data is everywhere: databases, spreadsheets, the web...if only we could access it at on time, at the right place, in the right form... Turning data into information is a struggle. Like diamonds are mined and cut to create jewels, so must data be extracted and transformed to create information. Learn how the open source data integration tool Kettle helps to fight your data dragons.
Web 2.0, Ajax, usability, and thoughtful graphic design are now commonplace, but open source web applications are lagging behind. Learn techniques that will make your project easier to use, more productive, less prone to user-frustration, and more successful.
The iPhone and the Cucumber test framework have something in common, besides the adoration of geeks. They're both designed to get out of your way, so you can think about the task at hand. So it's only natural that we'd want to use our favorite framework to drive apps on our favorite phone.


Open source-based businesses have successfully relied a small but reliable set of business models, including the support model and the freemium model. More recently, companies have discovered that the Cloud offers a new monetization model, focused on reliability, scalability and simplified configuration.
It has long been know that free/libre/open source software (FLOSS), especially GNU/Linux and Perl, played a major role in the Human Genome Project. This presentation will discuss the use and development of FLOSS in the post-genomics era, focusing on its pervasive use in sequencing the first cancer genome at The Genome Center at Washington University in St. Louis.
In this talk, Chris DiBona will bring the audience up to date on recent Google activities in open source. We will specifically cover advances in Android’s open source deployment infrastructure, including the Gerrit and Repo tools, and the directions those tools are taking.
How JSON overcame intolerance, inurement, and death threats to become the preferred data interchange format.
Keynote by Tim O'Reilly.
As evidenced by Barack Obama’s successful presidential campaign, we have clearly entered the age of the social web. This developer-oriented workshop will emphasize the use and application of free, open building blocks for enabling social networking features on your site or service, and provide illuminating insights from some of the key figures creating these technologies.
While consumers and the open source community don't interact often, users are important to projects because users test software, spread the word, motivate developers, lend credibility, contribute financially and participate in users groups. Come learn why users are important to an open source project and how they can be more involved.
SOA security needs to be by design, not as an afterthought. This session will demonstrate implementing Message Interceptor Gateway security pattern with WSO2 ESB, WSO2 WSAS and WSO2 Identity Server - together with the OpenID/Information Cards integration pattern at the front end.
Presentation File:
Tracking Package Freshness Presentation [PDF]
Come find out which distribution is best... at keeping their official repositories up to date. Or which distribution has the most up to date LAMP packages. This presentation explores trends culled from package releases since October '08, discusses the challenge of making sense of it all and possible improvements to distribution and package maintenance.
You unit test your application API. You unit test your presentation layer. You write integration and acceptance tests. But your database is tested only as a side-effect to testing everything else. That's a pretty important part of the stack to just leave to the assumption it works as expected! Come to this talk to learn about the tools that enable integrated unit tests for your database.
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Untestable Code Presentation [PDF]
How do you write untestable code and anger an ancient goddess? These and other questions will guide us while we discuss testability, an often forgotten attribute of software design and quality. Starting from untestable code fragments, the audience will learn why the code is untestable and how it can be refactored for testability.
In this session, we will help you create a single universal binary and installer of your Open Source project that can run on Windows, Mac, UNIX, Xen, VMware, VirtualBox, Qemu, Parallels, and Amazon's EC2. If you want to Linafy your app, just create a Debian package of your application and bring that and a 128x128 PNG image of your logo.
In this tutorial, learn about the use of open source tools to help develop native applications for the iPhone platform on Windows and Linux, and learn about the source code of a basic iPhone application in Objective-C. Explore open source libraries that help accelerate the creation of native iPhone games and apps without having to use the iPhone SDK directly.
Presentation File:
User Interface Year 2020 Presentation [PDF]
In the Year 2020 the user interface will look completely different from today. What will that be and how can FOSS lead the way?
Presentation File:
Using Drupal Presentation [PDF]
Drupal is a highly modular, Open Source Content Management System with a wealth of powerful add-on modules. Learn to harness it all and build dynamic websites with Drupal from authors of the book, Using Drupal.
Windmill is the best-integrated solution for Web test development and its success is largely due to its involved Open Source Community. This talk will get you writing and running automated tests and show off some of the most useful built-in tools for debugging and continuous integration.
Presentation File:
UTF8, Perl and You Presentation [PPT]
Do you have a website written in Perl that you need to migrate to UTF-8? Here are some important details that you need to know in order to achieve that goal.
Varnish is a application level reverse proxy for HTTP. Written with performance in mind it incorporates some advanced features to stretch the kernel as far as possible. Wikia relies heavily on varnish to serve a peak traffic of close to a gigabit/sec out of 3 different datacenters. Each one with two Varnishes working as a pair serving thousands of requests a second.


As a freelance developer chances are good you use either many, or no, version control systems for your code. If your mental health has been compromised by index.version080912f-b.inc file naming, or you wish there was more flexibility in how (and when) your files are submitted to data central, it’s possible that Bazaar is the version control system you’ve been waiting for.
Replication. Partitioning. Relational databases. Bigtable. Dynamo. There is no one-size-fits-all approach to scaling your database, and the CAP theorem proved that there never will be. This talk will explain the advantages and limits of the approaches to scaling traditional relational databases, as well as the tradeoffs made by the designers of newer systems like Google's Bigtable.
Presentation File:
What's new in Perl v5_10? Presentation [PDF]
Perl5 is alive and well, and this tutorial outlines the many significant changes appearing in the 5.10.0 release and beyond, especially in regular expressions and modules.
These days, there are countless number of software applications and web services that have been developed using free and open source software (FOSS). Such tools have become so flexible, powerful, and universal, that it should also be possible for authors to write manuscripts using FOSS in the same way that applications are developed. In this talk, we present some case studies of this phenomenon.
A storage engine for MySQL based on the InnoDB storage engine, designed to better scale on modern hardware, and including a variety of other features useful in high performance environments. It is fully backwards compatible, and so can be used as a drop-in replacement for standard InnoDB.
Google crawls more than just web pages, we also crawl source code. Ever wondered just how much open source code is out there? What licenses is all that code under? Which projects are the most shared? We'll try to answer these questions in this talk.
Abstraction is a powerful servant, but a dangerous master. We code, design, think, debug ... on a tower of abstractions. Spolsky's Law tells us that "All abstractions leak". This talk explores why they leak, why that's often a problem, what to do about it; I also cover why sometimes abstractions SHOULD "leak", and how best to produce and consume abstraction layers.
  • Intel
  • Microsoft
  • Google
  • SourceForge.net
  • Sun Microsystems
  • Facebook
  • Gear6
  • Kaltura
  • Liferay
  • MindTouch
  • MySpace.com
  • Novell, Inc.
  • Open Invention Network
  • Rackspace Cloud
  • Schooner Information Technology
  • Silicon Mechanics
  • Symbian Foundation
  • Twilio
  • WSO2
  • Yabarana Corporation

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