Distributed Systems: Maximizing Resilience
We claim that system redundancy (natural or artificial, deliberately introduced) should be applied for the purposes of Performance, Reliability and Energy efficiency or “PRE-smartness”. A process of an algorithm of application of available redundancy for PRE-smartness is proposed showing that it is further extension generalized algorithm of fault tolerance, when property of fault detection is replaced as property of PRE-smartness. We present a system level implementation steps of PRE-smartness. Using ITACS LTD forward and backward tracing algorithms applied for distributed computer system we demonstrate that efficiency (reliability as a whole, especially availability; performance of detection and recovery) grow up to the level when real-time applications of distributed system grows substantially. Ans estimation of reliability gain is modeled and demonstrated suggesting a policy of implementation of PRE-smartness as a permanent on-going process required for the system successful functioning.
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