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7/20/2010. Motivation. 2. . Motivation. .. . . . Solution. 7/20/2010. System Assumptions and Requirements. 3. . System Assumptions and Requirements. Query Model: Simple read and write operations to a data item identified by a primary key.ACID Properties: ACID guarantees tended to provide poor availability.Efficiency: Stringent latency requirements that are generally measured 99.9th percentile of the distribution to meet stringent Service Level Agreements(SLA).Other Assumptions: Amazon's inter9442
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