## Tinyid介紹

> `Tinyid`是滴滴開發的一款[分散式](https://so.csdn.net/so/search?q=分散式&spm=1001.2101.3001.7020)ID系統，`Tinyid`是在`美團（Leaf）`的`leaf-segment`演算法基礎上升級而來，不僅支援了資料庫多主節點模式，還提供了`tinyid-client`客戶端的接入方式，使用起來更加方便。但和美團（Leaf）不同的是，Tinyid只支援號段一種模式不支援雪花模式。

**Tinyid的特性**

- 全域性唯一的long型ID
- 趨勢遞增的id
- 提供 http 和 java-client 方式接入
- 支援批次獲取ID
- 支援生成1,3,5,7,9…序列的ID
- 支援多個db的配置

## Tinyid部署

`JDK部署`

```
[root@localhost packages]# tar zxvf jdk-8u121-linux-x64.tar.gz
[root@localhost packages]# mv jdk1.8.0_121/ /usr/local/jdk
[root@localhost packages]# vim /etc/profile
##末尾新增
export JAVA_HOME=/usr/local/jdk 
export CLASSPATH=$:CLASSPATH:$JAVA_HOME/lib/ 
export PATH=$PATH:$JAVA_HOME/bin
```

```
[root@localhost packages]# source /etc/profile
[root@localhost packages]# java -version
java version "1.8.0_121"
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)
```

`Maven部署`

```
[root@localhost packages]# tar zxvf apache-maven-3.5.0-bin.tar.gz
[root@localhost packages]# mv apache-maven-3.5.0 /usr/local/maven
[root@localhost packages]# vim /etc/profile
##末尾新增
export MAVEN_HOME=/usr/local/maven 
export PATH=$MAVEN_HOME/bin:$PATH
```

```
[root@localhost packages]# source /etc/profile
[root@localhost packages]# mvn -version
Apache Maven 3.5.0 (ff8f5e7444045639af65f6095c62210b5713f426; 2017-04-04T03:39:06+08:00)
Maven home: /usr/local/maven
```

`MySQL部署`

```
[root@localhost ~]# yum -y install mariadb mariadb-server
[root@localhost ~]# systemctl enable mariadb
[root@localhost ~]# systemctl start mariadb
[root@localhost ~]# mysql -uroot 
mysql> set password = password('123456');
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;    //設定mysql外網連線密碼
mysql> flush privileges;
```

`Tinyid部署`

```
## 拉取程式碼
[root@localhost local]# git clone https://github.com/didi/tinyid.git
[root@localhost local]# cd tinyid/tinyid-server/

## 匯入SQL檔案
[root@localhost tinyid-server]# mysql -uroot -p123456
mysql> create database tinyid;
mysql> use tinyid;
mysql> source /usr/local/tinyid/tinyid-server/db.sql;
mysql> exit
```

`修改配置檔案指定MySQL`

>[root@localhost  tinyid-server]# vim  src/main/resources/offline/application.properties

```
datasource.tinyid.primary.driver-class-name=com.mysql.jdbc.Driver
datasource.tinyid.primary.url=jdbc:mysql://localhost:3306/tinyid?autoReconnect=true&useUnicode=true&characterEncoding=UTF-8
datasource.tinyid.primary.username=root
datasource.tinyid.primary.password=123456

## 注意修mysql地址和庫名稱
jdbc:mysql://localhost:3306/tinyid?
```

`啟動tinyid`

```
[root@localhost local]# cd tinyid/tinyid-server/ 
[root@localhost tinyid-server]# sh build.sh offline
[root@localhost tinyid-server]# java -jar output/tinyid-server-xxx.jar
```

```
[root@localhost tinyid-server]#  netstat -untpl | grep java
tcp        0      0 0.0.0.0:9999            0.0.0.0:*               LISTEN      12836/java 
```

`自啟動指令碼`

> [root@localhost ~]# cd /usr/local/tinyid/tinyid-server
>
> [root@localhost tinyid-server]# vim tinyid.sh

```
#!/bin/sh
##
if [ -f /etc/init.d/functions ]; then
        . /etc/init.d/functions
elif [ -f /etc/rc.d/init.d/functions ]; then
        . /etc/rc.d/init.d/functions
else
        echo -e "\aJnice: unable to locate functions lib. Cannot continue."
        exit 0
fi

ulimit -n 65000
echo 1024 65000 > /proc/sys/net/ipv4/ip_local_port_range

## jar檔名稱
export JAVA_HOME=/usr/local/java/jdk1.8.0_181
export PATH=$JAVA_HOME/bin:$PATH:$PATH:/usr/ffmpeg/bin
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
JAR_HOME=/usr/local/tinyid/tinyid-server/
JAR_NAME=tinyid-server-0.1.0-SNAPSHOT.jar

## 過濾pid程式號
tpid=`ps -ef|grep $JAR_NAME | grep -v grep | grep -v kill | awk '{print $2}'`

#---------------------------------------------------------------------------
# START
#---------------------------------------------------------------------------
Start()
{
        if [ $tpid ]; then
                echo -n "tinyid process [${prog}] already running"
                echo_failure
                echo
                return 1
        fi

if [ ! -f ${JAR_HOME}/output/${JAR_NAME} ]; then
                echo -n "tinyid binary [${prog}] not found."
                echo_failure
                echo
                return 1
        fi

echo -n "starting service (tinyid): "
        cd ${JAR_HOME}
        nohup java -jar ${JAR_HOME}/output/${JAR_NAME}  > /dev/null 2>&1 &
        retval=$?
        if [ ${retval} == 0 ]; then
                echo_success
                echo
        else
                echo_failure
                echo
                break
        fi
        sleep 1

return 0
}

#---------------------------------------------------------------------------
# STOP
#---------------------------------------------------------------------------
Stop()
{
        echo -n "stopping service (tinyid): "
        kill -9 $tpid
        echo
        return 0
}

#---------------------------------------------------------------------------
# MAIN
#---------------------------------------------------------------------------
case "$1" in
        start)
                Start
                ;;
        stop)
                Stop
                ;;
        restart)
                Stop
                sleep 3
                Start
                ;;
        *)
                echo "please use : $0 {start|stop|restart}"
esac

exit

```

`設定任務計劃`

> [root@localhost tinyid-server]# crontab -l

```
*/1 * * * * sh /usr/local/tinyid/tinyid-server/tinyid.sh  start  >/dev/null 2>&1
```

![在這裡插入圖片描述](https://img-blog.csdnimg.cn/428a17cb404749a08b9b5aa5a7452af0.jpeg#pic_center)

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