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Percentiles don’t work: Analyzing the distribution of response times for web services

Adrian Cockcroft

JANUARY 29, 2023

> system.time(wait1 <- normalmixEM(waiting, mu=c(50,80), lambda=.5, > system.time(wait1 <- normalmixEM(waiting, mu=c(50,80), lambda=.5, Changes in behavior of the system from minute to minute is going to change the height of each peak, as the workload mix and cache hit rates change.

Lambda

Lambda Latency Cache Traffic

Revisiting “Serverless Architectures”

The Symphonia

MAY 22, 2018

I was a little restricted in my thinking the first time around and I’ve come to see FaaS as something not quite stateless, since caching state in a Lambda instance that might stick around for 5 hours is a perfectly reasonable idea. Lambda has configuration now and it has reserved capacity to help you avoid DoS’ing yourself.

Serverless

Serverless Architecture Lambda Azure

Percentiles don’t work: Analyzing the distribution of response times for web services

Revisiting “Serverless Architectures”

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