distributed systems

distributed systems

1. client - server

   • asymmetric roles
   • responsiveness can decrease as the number of clients increases
     • poor load balancing

2. multiple servers

   • servers can be both client and server
   • partitioning data
   • replicating data
     • better performance
     • fault tolerance

3. proxy server

   • remove indentity
   • intermediary
   • useage policy eg schools
   • caching

4. peer to peer

   • equal roles
   • hybrid peer to peer
   • napster

5. Performance

   • responsiveness
   • throughput

6. fault tolerance