cache-stampede-reference

Overview

A cache stampede (also "dog-piling," "thundering herd at cache miss") occurs when a cached value expires under high load - many requesters simultaneously detect the miss, all recompute, all write back. Per en.wikipedia.org/wiki/Cache_stampede: "massively parallel computing systems with caching mechanisms come under a very high load" and "multiple threads of execution will all attempt to render the content of that page simultaneously." The pathological state: "congestion collapse, preventing the resource from being recached and maintaining zero cache hit rates."

This skill is a pure reference consumed by per-tier test skills.