Posted inDistributed Systems
Distributed Mutual Exclusion
Process coordination in a multitasking OS – Race condition: several processes access and manipulate the same…
Posted inDistributed Systems
Logical time and logical clocks
Instead of synchronizing clocks, event ordering can be used If two events occurred at the…
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Causal ordering
Causal ordering is a vital tool for thinking about distributed systems. Once you understand it,…
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Group communication
A multicast operation is more appropriate – this is an operation that sends a single message from…
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Global Name Service (GNS)
Designed and implemented by Lampson and colleagues at the DEC Systems Research Center (1986) Provide…
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Synchronizing physical clocks
Two models of synchronization 1) External synchronization 2) Internal synchronization External synchronization: a computer‘s clock Ci is synchronized…
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CLOCKS, EVENTS AND PROCESS STATES
Each process executes on a single processor, and the processors do not share memory (Chapter…
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Physical, Logical, and Vector Clocks
Interactions within a Distributed System between 2 processes, P1 and P2. Distributed systems offer us…
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Global States
It is often desirable to determine whether a particular property is true of a distributed…
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distributed computing
Distributed computing is a model in which components of a software system are shared among…