The use of data-grid technology in service-oriented architectures
(SOAs) was the subject of a keynote address at the first annual IT
Architect Regional Conference in San Diego, which took place last week.
Dave Chappell, Oracle's VP and chief technologist for SOA, spoke on
the topic of "Next Generation Grid Enabled SOA" at the IASA event.
Chappell described the sort of problems that happen when processing
large amounts of XML data and trying to ensure reliability and
scalability in an SOA. Oracle's model for grid-enabled SOA stems from
technology that the company acquired about seven or eight months ago
when it acquired Tangosol. Oracle now offers this technology for
mission-critical applications, typically involving extreme transaction
processing, through its Coherence product line. A few noteworthy
technologies and concepts have helped enable SOAs, including: (1) The
use of business process orchestration tools, such as Business Process
Execution Language (BPEL) engines; (2) Basic SOA patterns for building
composite apps that are constructed from service functionalities; (3)
Loose coupling and modularity. However, in the process of using these
technologies -- and by choosing to use XML as the means for exchanging
data between apps and services -- the size of the data that is being
shipped around has been inflated by a factor of five, Chappell said.
With SOA, application silos are separated out and exposed as services.
Such an arrangement presents problems in how to share and manage
information across these services. More Information
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