HovercRaft
Marios Kogias, Edouard Bugnion
Abstract
Cloud platform services must simultaneously be scalable, meet low tail latency service-level objectives, and be resilient to a combination of software, hardware, and network failures. Replication plays a fundamental role in meeting both the scalability and the fault-tolerance requirement, but is subject to opposing requirements: (1) scalability is typically achieved by relaxing consistency; (2) fault-tolerance is typically achieved through the consistent replication of state machines. Adding nodes to a system can therefore either increase performance at the expense of consistency, or increase resiliency at the expense of performance.
Topics & Concepts
ScalabilityComputer scienceFault toleranceReplication (statistics)Distributed computingLatency (audio)Consistency (knowledge bases)Cloud computingSoftware fault toleranceSoftwareComputer networkEmbedded systemOperating systemTelecommunicationsArtificial intelligenceMathematicsStatisticsDistributed systems and fault toleranceCloud Computing and Resource ManagementSoftware System Performance and Reliability