Rewrite Map Apache -

we have db has , mappings of url redirect. whenever wants new redirect rule, instead of adding rule in apache add them db. function lookup db , redirect on each request.

we want replace db , instead use new system have got in place. content management system , hence can host .txt files in it.

ideally, want make call domain/rewrite.txt file in apache , read rules , if request matches of rules redirect.

i looked @ documentation here , found way use external rewriting program this. still things aren't making sense. can how this?