This read-write TruthValue enables or disables hop-based route selection from using a cache of precomputed routes; True enables the feature, False disables it. An administrator uses this as a performance optimization toggle, trading the freshness of route computation against the speed benefit of reusing cached results. For example, disabling the cache forces PAR to compute a fresh route every time a connection needs routing, useful when troubleshooting suspected stale-route issues.