Networking essentials

• Networking 101

  • applications *

    • HTTP, WebSocket

  • presentation

  • session

  • transport*

    • tcp, UDP,

      • tcp

        • connection oriented

        • reliable delivery

        • Guaranteed ordering

        • Higher latency

        • Flow control, congestion control

        • default reliable

      • UDP

        • connectionless

        • No delivey guarantee

        • No ordering

        • Lower latency

    • some additional functionality in addition to IP

  • network*

    • IP, infinaban

    • IP

      • IPv4

      • IPv6

      • public outside talking

      • private internal talking

  • Data link

  • Physical

  • 
• Layer protocol 3

  • ip

• Layer 7 protocols

  • Http, Rest, gPRC

  • SSE, Websocket, Webrtc

• Load balancing

• Deep dives

  • regionalization

  • timeouts and retries

  • Cascading faliures