redis-缓存设计-统计最耗时方法

统计

public static void addLog(Jedis conn, String methodName, Long startTime, Long endTime) {
        conn.zadd("timeLog", endTime - startTime, methodName);
        //只保留前2
        conn.zremrangeByRank("timeLog",0,-3);
    }

打印

  public static void   printTimeLog(Jedis conn){
        Set<Tuple> tuples= conn.zrevrangeWithScores("timeLog",0,-1);
        for (Tuple tuple:
                tuples) {
            System.out.println(tuple.getElement()+":"+tuple.getScore());
        }
    }

测试

 public static void main(String[] args)
            throws Exception {
        Jedis conn = new Jedis("127.0.0.1", 6379);
        conn.flushDB();
        test1(conn);
        test2(conn);
        test3(conn);
        printTimeLog(conn);
    }

    public static void test1(Jedis conn) throws InterruptedException {
        Long startTime = System.currentTimeMillis();
        Thread.sleep(1000);
        Long endTime = System.currentTimeMillis();
        addLog(conn, "test1", startTime, endTime);
    }

    public static void test2(Jedis conn) throws InterruptedException {
        Long startTime = System.currentTimeMillis();
        Thread.sleep(3000);
        Long endTime = System.currentTimeMillis();
        addLog(conn, "test2", startTime, endTime);
    }

    public static void test3(Jedis conn) throws InterruptedException {
        Long startTime = System.currentTimeMillis();
        Thread.sleep(10000);
        Long endTime = System.currentTimeMillis();
        addLog(conn, "test3", startTime, endTime);
    }

打印

test3:10003.0
test2:3005.0