Communication

Table of contents

• Communication

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Communication

• 분산시스템의 Network Communication Model

  

• Types of Communication
  • Transient vs Persistent communication
  • Asynchronous vs Synchronous communication

• Message-oriented middleware

  • RPC

    1. Basic RPC Operation

    2. Asynchronous RPCs

    

    1. Multicast RPCs

    

  • ZeroMQ Socket are rather low-level and programming mistakes are easily made.

    • Alternative : ZeroMQ

      Provides a higher level of expression by pairing sockets.

      • Three patterns of ZeroMQ
        • Request-reply
        • Publish-subscribe
        • Pipeline

• Message-oriented Middleware (MOM)

  • Operations
    1. put
    2. get
    3. poll
    4. notify
  • Asynchronous persistent communication through support of middleware-level queues

  • Queue Managers 를 통한 메시지 라우팅을 관리한다

  • Message Broker handles application heterogeneity in an MQ system
• Application-level Multicasting
  • 분산 시스템은 overlay network로 구성되며, 데이터를 전송하기 위해 네트워크를 사용한다
  • Flooding-based multicasting (=broadcasting) 방식으로 multicasting이 이루어진다
  • Epidemic (Gossip) Protocols
    • Anti-entropy
    • Rumor spreading