Diagnostic logging ‘events’ and benefits of decoupled log-processors by Jang-Vijay Singh

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The implementation of  good logging frameworks is typically asynchronous for good reason: background processing involved in logging activities must not cause an overhead in the main flow. Even the simplest action like writing the output to a log file is implemented behind the scenes in separate threads.

  

From a log analysis and diagnostics point of view, this is not a problem as each log entry includes a timestamp that shows the instant when the log entry was requested (rather than the time it was actually written to a log file)

The same principle applies when we use more complex technologies like the Oracle Service Bus and Oracle Integration Cloud (OIC). Each offers dedicated log activities that write to *-diagnostic.log files or the OIC activity stream.

Customer Requests

More than once, I came across some customer requests where they proposed writing dedicated services to perform something more complex than just writing to log files or activity streams. Customer would perhaps expect structured log entries in a specific format to be published to some queue or persisted to some big-data store. It is proposed that such a dedicated services/API’s that would then be called by each integration flow or process at different points like entry, exit, and error catch blocks.

However this has two clear drawbacks:

1) It involves a design-time and development time overhead where this new custom ‘logging API’ would be called by each integration flow (we then need to worry about its availability and error handling in addition to the actual real services we need to worry about). Read the complete article here.

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Technorati Tags: SOA Community,Oracle SOA,Oracle BPM,OPN,Jürgen Kress

About Jürgen Kress
As a middleware expert Jürgen works at Oracle EMEA Alliances and Channels, responsible for Oracle’s EMEA Fusion Middleware partner business. He is the founder of the Oracle SOA & BPM and the WebLogic Partner Communities and the global Oracle Partner Advisory Councils. With more than 5000 members from all over the world the Middleware Partner Community is the most successful and active community at Oracle. Jürgen manages the community with monthly newsletters, webcasts and conferences. He hosts his annual Fusion Middleware Partner Community Forums and the Fusion Middleware Summer Camps, where more than 200 partners get product updates, roadmap insights and hands-on trainings. Supplemented by many web 2.0 tools like twitter, discussion forums, online communities, blogs and wikis. For the SOA & Cloud Symposium by Thomas Erl, Jürgen is a member of the steering board. He is also a frequent speaker at conferences like the SOA & BPM Integration Days, JAX, UKOUG, OUGN, or OOP.

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