Thursday, July 30, 2020 Introduction to distributed system

Here is the link of lecture notes. 

Multiple Computers
More than one physical computer, each consisting of CPUs, local memory, and possibly stable storage, and I/O paths to connect it with the environment. 

Mechanisms for communicating with other nodes via a network. 

Shared State
If a subset of nodes cooperate to provide a service, a shared state is maintained by these nodes. The shared state is distributed or replicated among the participants.

Why distribute? 
  • Resource sharing 
  • Device sharing 
  • Flexibility to spread load 
  • Incremental growth 
  • Cost/performance 
  • Reliability/Availability 
  • Inherent distribution 
  • Security?

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