As APIs become more pervasive within our solutions we see the arrival of not just design and cataloging tools such as Apiary, Apigee and others but also the arrival of gateways. The gateways provide execution of operations including validation, accounting (moneytization), routing, and other controls such as throttled checks that would often not occur until the first contact with a service bus. For example initial routing based on the API call, fine grained authentication and authorisation (differing from your firewalls who will just perhaps authorise).
In the more traditional integration middleware of Oracle Service Bus and SOA (regardless of cloud, on-premises) you can trace the execution through the middleware end to end. This tracing can be achieved because the platform creates and assigns the a UUID (aka eCID) and ensures that it is carried through the middleware. It is this very behaviour that allows Oracle to provide Business Activity Monitoring without any need to be invasive. Burt not only that in a highly distributed environment you can track the processing of a transaction from end to end. Read the complete article here.
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