SpringCloud（11）：LoadBalance：实现负载均衡

朴灿烈づ我的快乐病毒、 2023-01-11 01:27 106阅读 0赞

### 一、增加服务提供者实现负载均衡 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMjk4MzUx_size_16_color_FFFFFF_t_70][]

（1）导出DB01数据库数据创建DB02、DB03数据库。

![20210125185129206.png][]

记住把表中的数据库字段更改

![20210125185335562.png][]

![20210125185348367.png][]

（2）创建2个服务提供者模块，8002和8003。

![20210125185612718.png][]

（3）添加依赖，依赖包和8001相同。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMjk4MzUx_size_16_color_FFFFFF_t_70 1][]

（4）添加配置文件

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMjk4MzUx_size_16_color_FFFFFF_t_70 2][]

注意修改yml配置文件中的端口号，数据库连接地址和状态信息。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMjk4MzUx_size_16_color_FFFFFF_t_70 3][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMjk4MzUx_size_16_color_FFFFFF_t_70 4][]

（5）编写代码，代码和8001基本相同，唯一的区别就是启动类需要修改。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMjk4MzUx_size_16_color_FFFFFF_t_70 5][]

（6）启动3个服务提供者测试

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMjk4MzUx_size_16_color_FFFFFF_t_70 6][]

访问Eureka发现SPRINGCLOUD-PROVIDER-DEPT有3个可用，并且有3个状态信息。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMjk4MzUx_size_16_color_FFFFFF_t_70 7][]

通过服务消费者进行多次访问[http://localhost/consumer/dept/list][http_localhost_consumer_dept_list]，可以发现依次访问3个服务提供者，说明默认负载均衡策略采用的是轮询策略。

![2021012519303724.png][]

![20210125192931371.png][]

![20210125192944774.png][]

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[20210125185129206.png]: https://img-blog.csdnimg.cn/20210125185129206.png
[20210125185335562.png]: https://img-blog.csdnimg.cn/20210125185335562.png
[20210125185348367.png]: https://img-blog.csdnimg.cn/20210125185348367.png
[20210125185612718.png]: https://img-blog.csdnimg.cn/20210125185612718.png
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMjk4MzUx_size_16_color_FFFFFF_t_70 7]: https://img-blog.csdnimg.cn/2021012519264796.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMjk4MzUx,size_16,color_FFFFFF,t_70
[http_localhost_consumer_dept_list]: http://localhost/consumer/dept/list
[2021012519303724.png]: https://img-blog.csdnimg.cn/2021012519303724.png
[20210125192931371.png]: https://img-blog.csdnimg.cn/20210125192931371.png
[20210125192944774.png]: https://img-blog.csdnimg.cn/20210125192944774.png