Monitoring tools emerge for .NET
Maintaining that ''the lack of adequate monitoring and management tools has
delayed the promise of Web services,'' Confluent Software Inc., Sunnyvale,
Calif., has announced plans to release ''Interceptor'' technology for Microsoft
The Interceptor technology, developed with help from Microsoft, is designed
to replace the traditional intermediary model for management and speed up
transactional Web services, said James Hogan, Confluent vice president.
''For transactional applications, when you do intermediary monitoring, you
impose in-process latency on the transaction and oftentimes that can be
unacceptable from a customer point of view,'' he said. The tool, dubbed
''Interceptor'' during development, is described by Hogan as ''an agent's model
where we deploy a piece of our instrumentation and management capabilities out
at the end-points of a composite application or distributed application.''
The intermediary model checks the Web services application a step at a time
as each component is invoked, adding latency, Hogan explained.
''In a more traditional intermediary model, you basically have a proxy sitting
there and functioning as an intermediary,'' he said. Adding full monitoring steps
in a transactional application can cause latency problems, he said.
''To the human it's not a big deal, but in terms of a networked application, a
Web services network, it can be substantial,'' Hogan said. The latency impact can
be mitigated by adding servers and increasing bandwidth; but the Interceptor
model is a more cost-effective way to deal with the problem, he argued.
''The Interceptor intercepts or acts as an agent and keeps track of how the
distributed application is performing based on whatever policies you set up
around it and how you are monitoring,'' said Hogan. ''It does that without
imposing additional steps in the process, and reports back out of process, so it
solves the latency problem very cleanly.''
The Interceptor technology is part of Confluent's CORE toolset for Microsoft
.NET, slated to ship during the first quarter of 2003, Hogan said.
For more information, click on http://www.confluentsoftware.com
Rich Seeley is Web Editor for Campus Technology.