Caching in controller pre rails 2.05


i am working on a project at university where we are developing a
caching system for an open source rails CMS. we need to be able to cache
dynamic content, however, cant use fragment caching for this. memcached
looked very promising however, it only is supported by rails after 2.10
and the code we are working on is running on rails 2.0.5.

Would be grateful if anyone knows of a caching plugin that may be
suitable for this project?