• Add a new rewrite-map() handler which declares a named map, file it uses (absolute path), and case sensitivity flag

• Add a new rewrite-map-exists() predicate just for the fun of it which will tell you if a given key exists in the map (apache doesn't have this)

• Add a new %{map:name-name:mapKey|defaultValue} exchange attribute which mostly follows Apache's syntax.  The only limitation is nested exchange attributes must use [] instead of {} due to an Undertow parsing issue I reported to them yesterday).

So, here is my sample rewrite map file

Here are my server rules:

So, it matches all URLs that look like /foo/something and then passing the regex capture group that matches something as the map key with a default value of 99.
Then, URLs like

get rewritten to

The rewrite map files should also refreshed from disk automatically when the date last modified bit changes on the file