Neat. I wouldn't use it, as I have a database :). Some notes: - it's not thread safe - it's not jruby-safe - you should generally avoid Marshal. It can have

Neat. I wouldn't use it, as I have a database :). Some notes: - it's not thread safe - it's not jruby-safe - you should generally avoid Marshal. It can have compatibility issues across Ruby versions, etc. plus yaml or json can be introspected by someone who needs to debug things. - it looks like it saves state in your current working directory? That'll definitely burn you down the line. - no tests. Im sure there's weird bugs hidden in there. Edit - another observation: - you're setting instance variables inside the class definition. Making them Class-Instance variables, rather than Instance-of-a-Class variables like you want. You need to set them in the initialize method instead.