Example for Model-dependant state ember concept using cache

Below is my route,

this.route('posts',{path: 'posts/:PostId/:PageIndex/:PageSize'});

For the postId=1 user is creating some filter stuff and navigates to postId=2 and comes back to postId=1 then user should be able to view created filters.
Typically, I would like to persist some controller sticky properties to each route user visits. how to do that ?.