private void setupMetrics() {
        this.insertTimer = metricsManager.getTimer("frontier_manager.insert.time");
        this.selectTimer = metricsManager.getTimer("frontier_manager.select.time");
    }
This class manages the crawler frontier

@author Luciano Barbosa
@version 1.0
ache/src/main/java/achecrawler/link/frontier/FrontierManager.java