For reference please see:
https://stackoverflow.com/questions/70622346/how-to-speed-up-solvermanager-solveandlisten

When SolverManager.solveAndListen(...) is called, it can take ~500ms to run the ANC work in particular:
org.drools.ancompiler.KieBaseUpdaterANC.generateAndSetInMemoryANC

In some OptaPlanner projects, you need to repeated call solveAndListen() for sampling or other purposes, and a delay of 500ms can really add up.

This caching enhancement would make OptaPlanner highly efficient for these use cases.