JarCasting雪花Id（分布式Id）算法工具库
Twitter雪花算法-普通版
Twitter的雪花算法，用于生成分布式Id
Maven依赖
<dependency>
<groupId>com.github.duanxinyuan</groupId>
<artifactId>util-snowflake</artifactId>
</dependency>
- Twitter雪花算法工具类：SnowflakeIdUtils
Twitter雪花算法-完美版
- 增加了使用Redis分配workerId和datacenterId的逻辑，确保不会重复
- 最多可以分配32*32=1024个workerId+datacenterId的组合
Maven依赖
<dependency>
<groupId>com.github.duanxinyuan</groupId>
<artifactId>util-snowflake-prefect</artifactId>
</dependency>
- Twitter雪花算法工具类：SnowflakeIdUtils
配置示例
properties 配置示例
#雪花算法模块名
snowflake.module=test
#Redis缓存类型，single/sentinel/sharded/cluster，必须配置
cache.redis.type.snowflake=single
#Redis节点信息列表，多个使用逗号隔开，必须配置
cache.redis.nodes.snowflake=127.0.0.1:6380
#Redis密码，没有密码不需要配置
cache.redis.password.snowflake=123456
yaml 配置示例
snowflake:
#雪花算法模块名
module: test
cache:
redis:
#Redis缓存类型，single/sentinel/sharded/cluster，必须配置
type:
snowflake: single
#Redis节点信息列表，多个使用逗号隔开，必须配置
nodes:
snowflake: 127.0.0.1:6380
#Redis密码，没有密码不需要配置
password:
snowflake: 123456
使用示例
import com.dxy.library.json.jackson.JacksonUtil;
import com.dxy.library.snowflake.SnowflakeIdUtils;
import org.junit.Test;
import java.time.Clock;
import java.util.List;
import java.util.Map;
/**
* @author duanxinyuan
* 2019/1/14 21:54
*/
public class SnowflakeIdUtilsTest {
@Test
public void getAllDataCenterWorkerId() {
Map<String, Map<String, Long>> allDataCenterWorkerId = SnowflakeIdUtils.getAllDataCenterWorkerId();
System.out.println(JacksonUtil.to(allDataCenterWorkerId));
}
@Test
public void getWorkerId() {
long workerId = SnowflakeIdUtils.getWorkerId();
long datacenterId = SnowflakeIdUtils.getDatacenterId();
System.out.println(workerId);
System.out.println(datacenterId);
}
@Test
public void testSnowflakeId() {
System.out.println(SnowflakeIdUtils.getAsLong());
System.out.println(SnowflakeIdUtils.getAsString());
}
@Test
public void testSnowflakeIdBatch() {
long start = Clock.systemUTC().millis();
for (int i = 0; i < 100000; i++) {
System.out.println(SnowflakeIdUtils.getAsLong());
}
System.out.println(Clock.systemUTC().millis() - start);
}
}