demo project for SpringCloud

https://github.com/chenshun00/example-demo

install DB

• install docker
• docker pull chenshun00/mysqlutf8:0.0.1
  • more information @see mysql:5.7
• start docker

create database test;
CREATE TABLE `book` (
                      `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
                      `author` varchar(16) NOT NULL DEFAULT '''''' COMMENT '作者',
                      `publish_date` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
                      `name` varchar(12) NOT NULL DEFAULT '',
                      PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4;
INSERT INTO `book` (`id`, `author`, `publish_date`, `name`)
VALUES
  (1, 'cc', '2022-04-27 03:37:26', 'first book'),
  (2, 'cc', '2022-04-27 03:37:29', 'second book');

spring-datasource-boot-starter

• find starter from datasource-starter

cd path
git clone https://github.com/chenshun00/datasource-starter.git
cd datasource-starter && mvn install

install consul

• install

• start

  • find ip by ifconfig
  • consul agent -dev -bind 192.168.1.103 -server -bootstrap -data-dir /Users/chenshun/springcloud/consul

    operation

    # browser->consul-provider->db
    curl 'http://127.0.0.1:8082/book?author=cc'
    # browser->consul-consumer(feign)->consul-provider->db
    curl 'http://127.0.0.1:9082/feign'

    some problem for newbe

• feign convert GET to POST, result in HTTP method not support POST error

  • https://blog.csdn.net/qq_34129814/article/details/107935091
• feign lose parameter
  • https://blog.csdn.net/qq_17238449/article/details/109648994

• how handle feign’s exception

  some question

• how to config feign’s parameter, like http connection pool, pool size. sync or async, cache how to config or no cache.

• how to do service governance, monitor? metrics? logging?
• how to simplify development. what component is need 100%.

• etc.

  document

• feign

  reference

• https://www.cnblogs.com/wuzhenzhao/p/12835997.html

• https://segmentfault.com/a/1190000019284355
• https://spring-cloud-alibaba-group.github.io/github-pages/hoxton/zh-cn/index.html#consumer%E5%BA%94%E7%94%A8
• https://www.skypyb.com/2021/06/jishu/1836/