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A comment on What software engineers can learn from the rapid collapse of Fast. Parent comment

Re:What software engineers can learn from the rapid collapse... by teruakohatu on Thursday April 07, 2022 @11:58PM (#30953191)
What is a time-windowed hash-map? Just a time based key-value store?
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Re:What software engineers can learn from the rapid collapse... by agilob on Friday April 08, 2022 @03:20AM (#30954233)
Yes, a hash map that expires objects and loads new KV when key isn't present inside

https://github.com/google/guava/wiki/CachesExplained

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Re:What software engineers can learn from the rapid collapse... by lupire on Friday April 08, 2022 @08:37AM (#30956112)
No, it's a rolling buffer of last N hours/days of data, but compressed into a hash table of counters instead of a log array.
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Re:What software engineers can learn from the rapid collapse... by omalleyt on Friday April 08, 2022 @02:39AM (#30953987)
I think he means an LRU cache
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