Can a Solr Plugin be pre-loaded at Solr Startup

[Geoffrey_Slinker]

I have a few classes that are Analyzers, Readers, and TokenFilters. 
These classes use a large hashmap to map tokens to another value. The 
code is working great. I go to the Analysis page on the Solr dashboard 
and everything works as I would like. The problem is that the first time 
each one of these are used it takes them a long time to load the classes.

Is there a way that I can cause these classes to be loaded when Solr 
starts up?

It also seems that at some time the classes are being reloaded because 
occasionally I see the analysis take a long time, similar to the first 
time the field analysis was used from the Solr dashboard. Maybe that is 
not the case, but it seems to be.

Are plugins loaded once they are invoked for the entire Solr process or 
are plugins loaded for each thread?

Thank you.