All that's there right now is a simple Python script. However, that script is already a useful tool, installed at multiple production sites. Here's how the script works:
- identify your active databases and daily/weekly low traffic periods.
- create a cron job which calls flexible_freeze.py with a time limit to keep it inside your low traffic window.
- flexible_freeze.py will loop through your tables with the oldest XIDs, freezing them until it runs out of time or out of tables
Of course, I have a tanker-truck full of desired improvements/expansions to this. So, pull requests welcome.
If you're more into Ruby, Wanelo has rewritten flexible freeze for Rails and incorporated it into their Postmodern tool.