Cache Lifetime Options

This simple module increases the available options for core page cache up to a year (admin/config/development/performance).

Recommended caching modules:
http://drupal.org/project/boost
http://drupal.org/project/expire

My use case: I have a site with 500 000 nodes where content never changes, and crawlers hammer the server since the page cache max time is 1 day, and most of the nodes are out of cache. (Boost can set its own cache lifetime to 1 year, but occasionally the Boost logic failed and the entire cache was cleared during cron). I did not want to pay for a better server, but to increase the core cache lifetime.