The Quota Details utility (Figure 9-4) shows all the quotas
and where your application stands in relation to your limits.
Figure 9-4. The Quota Details utility
Use the App Engine Logs utility (Figure 9-5) to debug your
application using five levels of sensitivity. From Debug, the
least severe, to Critical, the most severe, you can see any
recent error messages from your application.
Figure 9-5. The Logs utility