long sTime = System.nanoTime(); String region = searcher.search(ip); long cost = TimeUnit.NANOSECONDS.toMicros((long) (System.nanoTime() - sTime)); System.out.printf("{region: %s, ioCount: %d, took: %d μs}\n", region, searcher.getIOCount(), cost);
输出
{region: 中国|0|河南省|郑州市|电信, ioCount: 0, took: 743 μs}