[kad-korpem]

Description

A degenerate request (very large bounding box combined with very small width/height) can cause high CPU usage in Mapserver. Setting a (high) default for the max scale denominator provides a workaround for this issue, since it forces Mapserver not to try rendering features beyond a certain zoom. For specific use cases, it is still possible to set a higher max scale denominator explicitly in a WMS CR.

Type of change

• Improvement of existing feature
• Configuration change
• Breaking change

Checklist:

• I've double-checked the code in this PR myself
• I've left the code better than before (boy scout rule)
• The code is readable, comments are added that explain hard or non-obvious parts.
• I've expanded/improved the (unit) tests, when applicable
• I've run (unit) tests that prove my solution works
• There's no sensitive information like credentials in my PR

[kad-marchal]

Tests are still red, but changes lgtm