Process:
         * cached_host_check_stats
         * cached_service_check_stats

def _get_cached_stats(self, app_stats):
        """
        Process:
         * cached_host_check_stats
         * cached_service_check_stats
        """
        stats = {}
        app_keys = [
            "cached_host_check_stats",
            "cached_service_check_stats",
        ]
        for app_key in app_keys:
            if app_key not in app_stats.keys():
                continue

            (x01, x05, x15) = self._convert_tripplet(app_stats[app_key])
            scratch = app_key.split("_")[1]
            stats["%ss.cached.01" % (scratch)] = x01
            stats["%ss.cached.05" % (scratch)] = x05
            stats["%ss.cached.15" % (scratch)] = x15

        return stats