Which HTTP error codes are considered server-side errors by Dynatrace?

Server-side errors are indicated by HTTP status codes in the 500-599 range. These codes signal that the server has encountered a situation it doesn't know how to handle, meaning that the fault lies on the server side rather than the client side. For example, common server-side error codes include 500 (Internal Server Error), 503 (Service Unavailable), and 502 (Bad Gateway).

In the context of Dynatrace, monitoring the frequency and occurrence of these error codes is essential for understanding application performance and diagnosing issues. Identifying server-side errors can help teams quickly pinpoint underlying problems within the server or backend services, facilitating timely remediation and ensuring better user experiences.

The other ranges represent different types of responses: the 200-299 range indicates successful requests, the 400-499 range is designated for client-side errors (indicating issues with the request sent to the server), and the 300-399 range is used for redirection responses. These codes do not reflect server-side errors, which is why the focus is specifically on the 500-599 range for identifying such issues.