readme

drop database if exists DB03;
create database DB03 character set UTF8;
use DB03;
CREATE TABLE dept (
	dept_no INT auto_increment NOT NULL,
	dept_name varchar(100) NOT NULL,
	db_source varchar(100) NOT null,
	primary key(dept_no)
);
INSERT INTO dept(dept_name, db_source)  VALUES('计划部', DATABASE());
INSERT INTO dept(dept_name, db_source)  VALUES('生产部', DATABASE());
INSERT INTO dept(dept_name, db_source)  VALUES('研发部', DATABASE());



1、eureka的注册与发现
2、eureka集群 @@EnableEurekaClient  @@EnableEurekaServer
3、ribbon负载均衡  @LoadBalance @@EnableEurekaClient
    自定义ribbon @RibbonClient(name = "MICROSERVICECLOUD-DEPT", configuration = MySelfRule.class)
                @Configuration @Bean IRule
4、feign负载均衡：接口+注解，面向接口编程
    @FeignClient(value = "MICROSERVICECLOUD-DEPT")
    @EnableFeignClients(basePackages = "com.betty") //feign默认使用轮询算法
5、Hystrix 断路器
  5.1、服务熔断-- 服务端返回
       @EnableCircuitBreaker //hystrix
       @HystrixCommand(fallbackMethod = "processHystrix_Get")
       @FeignClient(value = "MICROSERVICECLOUD-DEPT")
  5.2、服务降级--客户端，与服务端无关
       与feign （接口+注解的负载均衡）配合使用
       @FeignClient(value = "MICROSERVICECLOUD-DEPT", fallbackFactory = DeptClientFallBackFactory.class)  //服务降级
  5.3、HystrixDashboard 服务监控 （豪猪)

        HystrixDashboard页面： http://localhost:9001/hystrix
                    监控对象： http://localhost:8001/hystrix.stream
                    查看：7色、1圈、1线
6、zuul 网关
    @EnableZuulProxy
    不用代理 http://localhost:8001/dept/get/3
    使用代理 http://myZuul.com:9527/microservicecloud-dept/dept/get/3
7、spring cloud config配置管理