yanyzy commented on issue #3034: Optimize performance, reduce unnecessary loops URL: https://github.com/apache/incubator-shardingsphere/pull/3034#issuecomment-531631589 @tuohai666 I tested it locally using the following code ```java @Test public void valueOfBenchmark() { int[] commands = new int[100_0000]; for (int i = 0; i < 100_0000; i++) { commands[i] = random.nextInt(31); } Stopwatch stopwatch = Stopwatch.createStarted(); for (int i = 0; i < 100_0000; i++) { MySQLCommandPacketType.valueOf(commands[i]); } System.out.println("1st Time of execution in MILLISECONDS:" + stopwatch.stop().elapsed(TimeUnit.MILLISECONDS)); stopwatch = Stopwatch.createStarted(); for (int i = 0; i < 100_0000; i++) { MySQLCommandPacketType.valueOfOrigin(commands[i]); } System.out.println("2st Time of execution in MILLISECONDS:" + stopwatch.stop().elapsed(TimeUnit.MILLISECONDS)); } ``` and the result of the operation is: 1st Time of execution in MILLISECONDS:12 2st Time of execution in MILLISECONDS:50
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