chikamichi-marshalize

https://github.com/chikamichi/marshalize

This Rails plugin provides serialization using Marshal in the same way Rails provides builtin serialization using YAML. You can register any kind object (not just arrays and hashes…). Be aware that Marshal defines a binary format, which may change in incoming Ruby releases and is currently not portable outside the Ruby scripting world. For a portable yet slower alternatives, you may try JSON or YML serializers.