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@ -4,9 +4,10 @@ import java.util.HashSet; |
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import java.util.Set; |
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import java.util.Set; |
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/** |
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/** |
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* @Author:JCccc |
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* @Author: JCccc |
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* @Description: |
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* @Description: 雪花算法生成id工具类 |
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* @Date: created in 15:31 2019/6/12 |
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* @Date: created in 15:31 2019/6/12 |
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* @Modified By: gongsj. 修改为单例模式 modified in 11:50 2020/09/09 |
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*/ |
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*/ |
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public class SnowflakeIdUtils { |
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public class SnowflakeIdUtils { |
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// ==============================Fields===========================================
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// ==============================Fields===========================================
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@ -174,27 +175,27 @@ public class SnowflakeIdUtils { |
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return SnowflakeIdUtils.getInstance().nextId(); |
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return SnowflakeIdUtils.getInstance().nextId(); |
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} |
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} |
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public static void main(String[] args) { |
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// public static void main(String[] args) {
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//
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SnowflakeIdUtils snowflakeIdUtils = SnowflakeIdUtils.getInstance(); |
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// SnowflakeIdUtils snowflakeIdUtils = SnowflakeIdUtils.getInstance();
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//
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// for (int i = 0; i < 20; i++) {
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//// for (int i = 0; i < 20; i++) {
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// System.out.println(snowflakeIdUtils.nextId());
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//// System.out.println(snowflakeIdUtils.nextId());
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// }
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//// }
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// System.out.println("-+-+-+-+-+-+-+-+-+-+-+-+-+-");
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//// System.out.println("-+-+-+-+-+-+-+-+-+-+-+-+-+-");
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// for (int i = 0; i < 20; i++) {
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//// for (int i = 0; i < 20; i++) {
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// System.out.println(SnowflakeIdUtils.getInstance().nextId());
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//// System.out.println(SnowflakeIdUtils.getInstance().nextId());
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// }
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//// }
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// Set<Long> set2 = new HashSet<>();
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//// Set<Long> set2 = new HashSet<>();
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//// for (int i = 0; i < 1000000; i++) {
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//// set2.add(snowflakeIdUtils.nextId());
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//// }
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//// System.out.println(set2.size());
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////
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// Set<Long> set = new HashSet<>();
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// for (int i = 0; i < 1000000; i++) {
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// for (int i = 0; i < 1000000; i++) {
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// set2.add(snowflakeIdUtils.nextId());
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// set.add(SnowflakeIdUtils.getRandomid());
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// }
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// }
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// System.out.println(set2.size());
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// System.out.println(set.size());
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//
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// }
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Set<Long> set = new HashSet<>(); |
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for (int i = 0; i < 1000000; i++) { |
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set.add(SnowflakeIdUtils.getRandomid()); |
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} |
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System.out.println(set.size()); |
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} |
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} |
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} |