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Micro Service (Architecute Link Title (Service Discovery (Heartbeat (Old;…

- - - - 類似 WAF(Web application Firewall)
      - 當APP對API gateway做API Call時,會把各Service取得後統一回傳到API
      - Before
        
        APP Service1 ->API1 , Service2 -> API2.....
      - After
        
        APP Service1 -> API Gateway, Service2-> API Gateway..... API Gateway -> API...
        
        Advantage
        
        效率好,只需一次往返
        
        好管理
        
        有統一的進出端口,容易進行最佳化及妥善做好output cache
        
        安全性佳,可負責認證問題
  - - - 做Service Discovery 前要確保每service 都有registy到service registry
    - - Old; Service會定期告訴Service registry status
        
        缺點
        
        無法第一時間偵測到 ,ex. heartbeat 每10;s 一次偵測,但10秒內中斷掉 (service ----> service registry)
      - Now: Service Discovery 可主動偵測service status
      - Service ---> service registry ,registrar ---> service
  - - - Asynce 非同步" 一套message Queue
      - Synce 同步
        
        2個Message ques (request, response)
      - Event
    - - 使用RDBMS的Transanction control 控制一連串指令
    - - Microservice -> Mginx -> IPC(Inter Process Communication)