Ver orden en que usa los VirtualHosts
apache2ctl -S

- Alias/Redirect - First match wins - RewriteRule - Last match wins

In addition:

• Redirect over Alias
• Alias before Directory container
• Location containers run once before Alias, so Location will apply

• The configured ProxyPass and ProxyPassMatch rules are checked in the order of configuration.
  - The first rule that matches wins.
  - So usually you should sort conflicting ProxyPass rules starting with the longest URLs first.
  

• ProxyPass takes precedence before modrewrite and modalias

O rewrite en bloque Proxy

<Proxy *>    
    Redirect permanent /broken/page.html https://www.example.com/correct/page.html    
    RedirectMatch ^/deadstuff.+ http://www.example.com/correct/page.html    
</Proxy>    
      
ProxyPass / http://127.0.0.1:8090/ connectiontimeout=300 timeout=300    
ProxyPassReverse / http://127.0.0.1:8090    

• Regarding ProxyPass “working in the other direction”, this is only true if they're outside of a <Location>. Inside a <Location>, the rules of merging <Location> are followed, meaning you want your least-specific <Location> directives to come before the more specific ones. This allows the more specific ones to override the less specific directives.

Inside a <Location>, the rules of merging <Location> are followed, meaning you want your least-specific <Location> directives to come before the more specific ones. This allows the more specific ones to override the less specific directives.