Solr: User Defined Caches

Hi, I've looked and googled, but I have been unable to actually find a working example of User Defined Caches. I looking for something showing the basics how to define, implement and use as User Defined Cache. Is there one out there and I have just missed it?? Thanks

Suggester index replication

Is there a way to get suggester index replicated to all search nodes from index node? Do I need to build suggester index for each search node separately?