ARP、RARP、Proxy ARP

ARP

已知ip位址來查詢MAC位址

RARP(Reverse ARP)

已知MAC位址來反查IP位址

Proxy ARP

代理他人來回應其對應的MAC位址

Storm學習筆記

Storm的架構元件是基於:

1. Apache Zookeeper
   ---  Distributed System, used to store metadata
2. 0MQ
   ---  Async message transport-layer
3. Apache Thrift
   ---  Cross-Language Bridge, RPC
4. LMAX Disruptor
   ---  High performance queue shared by threads
    
5. Kryo
   ---  Serialization framework

• Spout(噴口):
        串流的來源, ex: 讀取log, API calls, event data, queues, ...
  
• Bolt(螺栓):
        串流的聚合(處理輸入串流並產生新的串流), ex: Stream joins, DBs, APIs, Filters, Aggregation,...
  
• Topology(拓樸):
         由Spout以及Bolt所構成的有向圖