Northern Virginia Software Symposium
November 6 - 8, 2009 - Reston, VA
View the event details here ».
Forward Leaning Software Engineer
Brian Sletten is a liberal arts-educated software engineer with a focus on forward-leaning technologies. His experience has spanned many industries including retail, banking, online games, defense, finance, hospitality and health care. He has a B.S. in Computer Science from the College of William and Mary and lives in Auburn, CA. He focuses on web architecture, resource-oriented computing, social networking, the Semantic Web, data science, 3D graphics, visualization, scalable systems, security consulting and other technologies of the late 20th and early 21st Centuries. He is also a rabid reader, devoted foodie and has excellent taste in music. If pressed, he might tell you about his International Pop Recording career.
There is a shift going on in the Enterprise. While still used and useful, the promises of the SOAP/WSDL/UDDI Service-Oriented Architecture (SOA) stack have failed to live up to their promise. A new vision of linked information is enveloping online and Enterprise users. The REST architectural style is squarely behind this thinking as a way of achieving low-cost, flexible integration, increased data security, greater scalability and long-term migration strategies.
If you have dismissed REST as a toy or are unfamiliar with it, you owe it to yourself to see what is so interesting about this way of doing things.
There is tremendous interest in REpresentational State Transfer (REST) as an architectural style for building scalable, flexible, information-driven architectures in the Enterprise. The success of the Web has caught our attention in the face of increased complexity and many failures with more traditional Web Services technologies. The problem is that it is difficult to sell a way to do things. Managers do not want to feel like they are innovating in the middleware space. They want to understand why they should deviate from the blue prints laid down by the industry leaders. They want to understand when they should use REST, when they should use SOAP and when they might fallback to regular old Java-based messaging. They want to make business-based technology decisions that lay a path to forward progress rather than paying for technological flux.
This talk will introduce REST and walk through why it is so important and makes such a difference. We will talk about REST API design, security, long-lived systems, content-negotiation, contract enforcement, when REST might not make sense, etc.
REST and the Web Architecture are the basis for many exciting things happening on the Web and within our organizations. You owe it to yourself to make sure you really "get it".
This talk should be accessible to everyone but is probably intermediate level.
The human web is reasonably well in hand by now. We are getting pretty good at building systems that people find valuable and entertaining. We have not spent as much time concerned about our software friends. There is a ton a rich content available on the web that is too difficult to extract in automated ways using just XHTML, the meta tag and microformats. This talk will introduce you to some emerging technologies from the Semantic Web camp to enrich your web pages with useful information for both automated extraction and improved browsing experiences.
The Resource Description Framework (RDF) is the metadata substrate of the Semantic Web. It allows you to express fairly arbitrary relationships about people, places, things, content in an open world way. It is trivial to mix and match terms, vocabularies, etc. to have a rich expressive capability not bound by the limitations of the relational data model and XML schemas.
GRDDL is a technology for generating RDF metadata from content on demand. This can include XML documents, XML-RPC requests, XHTML pages, etc. The content could include authorship information, geotagging, creative commons license information, the topic of the document, etc. RDFa allows us to be more explicit about the metadata by embedding actual RDF relationships in our content.
With technologies no more complicated than the presentation markup we are already using, you can imbue any web tier with extra semantic specialsauce that will benefit your users as well as help link you into the emerging Web of data.
The human-friendly Web is about nicely-formatted, accessible content for users to browse. There is an emerging Data Web that relies on technologies from the Semantic Web stack to link increasingly rich connections between various data sources. SPARQL and RDF are the main tools for expressing and using this connectivity. This talk will introduce you to one of the practical and accessible aspects of employing these ideas on the Web and in the Enterprise.
Getting people to come to consensus on common models and schemas is usually the hardest part of any data integration strategies. These technologies help lower the bar on both the technical and social costs of stepping up your integration strategies.
We will explore:
- an introduction to RDF and the SPARQL query language
- the fantastically successful Linked Data project that connections billions of interrelated content
- how to include relational data in the mix
- how to include enriched Web pages in the mix
- how to build client-friendly applications on top of this information
The goal for web services was always to reduce our burden by increasing the potential for reuse of business functionality. Somehow, we got lost along the way in a morass of confusing, unfulfilling and downright broken technologies.
While we are interested in pursuing REST-based systems for managing information, we need some strategies for tying it all together sensibly. If we abandon WSDL, SOAP and UDDI, what do we replace them with? This talk will walk you through combining resource-oriented strategies with technologies from the Semantic Web to describe, find, and bind to services in dynamic, flexible and extensible ways.
We will start to blur the distinction between data, documents, services and focus on information and how it is connected to what we already know.
This talk will introduce you to strategies for building on individual REST services to produce a well-described, dynamic, discoverable fabric of services that can be used in a variety of scenarios including:
- finding data sources
- finding transformation services
- orchestrating these sources and services in reusable ways
- publishing discoverable services