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A comment on Cache Concurrency Control. Parent comment

Re:Cache Concurrency Control by tyingq on Friday May 31, 2019 @09:12AM (#20060506)
I'm curious if assigning a random value from an acceptable range for the expiry time is a common approach. I assume that wouldn't work for all cases, but might spread the avalanche for some.

Google searches on this topic (random expiry to mitigate an avalanche cache refresh) turn up very little.

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Re:Cache Concurrency Control by NovaX on Friday May 31, 2019 @01:46PM (#20063216)
It is very common and often referred to as jitter.

A variation, called scaled ttl, was nicely discussed in this video. https://www.youtube.com/watch?v=kxMKnx__uso

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