Variability in Response Times: Understanding "The Tail

The concept of "The Tail" explores the variability in response times within systems, where most requests are answered promptly but some are significantly slower. Various reasons for slow responses are discussed, such as shared resources, queueing, and synchronization issues. Strategies to mitigate the impact of slow responses, such as replication, hedging, micro-partitions, and probation, are also presented. The article emphasizes the importance of managing variability in response times to maintain system efficiency.

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