Create ELB

  1. EC2 Dashboard > LOAD BALANCING > Load Balancers [Create Load Balancer]
  2. Define Load Balancer
    AWS
  3. Assign Security Groups
    AWS
  4. Configure Security Settings
    AWS
  5. Configure Health Check
    AWS
  6. Add EC2 Instances(one or more Instances)
    AWS
  7. Add Tags
  8. Review: Press [Create]

Check ELB Status

  1. DNS Name: xxx-2019755801.us-west-2.elb.amazonaws.com
  2. Status: 1 of 1 instances in service
    AWS
  3. Instance Status is InService (Not OutService)
    AWS
  4. Check Service
    AWS

Nginx 自动禁止爬虫IP采集

### 背景最近我们有一个公开服务提供给客户查询关键词的热度值,由于这个API做在官方网站上,自然没有用户登陆,也没有很高查询成本,所以设计上没有任何鉴权无法进行身份认定,于是就被一个爬虫开了超高并发请求,直接后端的AWS Tomcat CPU被用尽,导致无法响应。爬虫显然...… Continue reading

Redis原子性事务Lua应用

Published on June 28, 2020