Permanent cache for livedocs

Hello, Yesterday I was thinking in implementing some kind of permanent caching for livedocs, instead of deleting all cached files when build.sh is run. Then I've checked that the tables files has a mtime colum. Maybe this was your original idea! As this could boost significantly livedocs' performance, I think we could discuss how to implement this feature. I've thougt in two ways: * having in all cached files a code like: <?php if (outdated()) parse_file_again(); ?> With this method, we would check every time a file is accessed if it updated or not. Second method: * When building, we could have a script that would check each file for changes and delete them if they are outdated. (we must delete all files if there were changes in one of the entities files, as it would be hard to track if that page uses the modified entity or not - and would take too many time). Any opinions/sugestions/ideas?? Nuno