What does APM Insight's - Error(%), Exceptions(Fatal, Warning) metrics mean? How are they calculated?
1. Error(%):
It represents the proportion of errors in relation to the total number of requests made within a specific period at the APM Insight application/transaction level.
Errors(%) = (Error Count/ Total request Count) * 100
Where,
Error Count refers to the number of requests (transaction) at the APM Insight application level that was returned with a response code from 400 to 599.
Total Request Count refers to the overall number of requests (transactions) made at the APM Insight application level including both successful and erroneous requests.
2. Exceptions:
It represents the number of exceptions that occurred within a specific period at the APM Insight application/transaction level.
Exceptions = Fatal Exception Count + Warning Exception Count
Where,
Fatal Count refers to the number of exceptions at the APM Insight application level with a severity level classified as 'Fatal'. These exceptions indicate critical issues that can severely impact the application's functionality.
Warning Count refers to the number of exceptions at the APM Insight application level with a severity level classified as 'Warning'. These exceptions indicate potential issues or non-fatal errors that may require attention but do not cause the application to fail entirely.
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