Error Handling and Retry Logic
Checking status codes and implementing retries
HTTP errors are not Go errors
An HTTP 404 or 500 status is not a Go error — http.Client.Do returns nil error for any valid HTTP response. Check resp.StatusCode explicitly.
Wrapping errors
Wrap errors with context using fmt.Errorf("operation: %w", err) so callers can inspect the cause with errors.Is / errors.As.
if err != nil {
return fmt.Errorf("fetch users: %w", err)
}All lessons in this course
- Making HTTP Requests
- Setting Timeouts and Headers
- Decoding JSON Responses
- Error Handling and Retry Logic