The advantage of having per-API log files is that it is very easy to analyze/monitor what went wrong in a particular REST API defined in the ESB by looking at the log files. Enabling this feature will not terminate the wso2-esb.log file being keeping the logs about this service, the complete log will contain every log statement including the service logs that you have configured to be logged into a different log file. In other words, the service log The API log is an additional log file, which will contain a copy of the logs to that a particular serviceREST API.
Below are the configuration details to configure the logs of a REST API called TestAPI using log4j properties.
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