Cache invalidation is a distributed systems problem
The TTL is not a cache policy. It is a probability distribution, and somebody has to own it.
Start here. The clearest case for why the medium has to admit change.
If you only read four things
A starting order. The third one is the one people skip and it is the one that changes how you read the rest.
The p99 is a lie you tell yourself
You cannot add percentiles. Every latency budget that does is a budget nobody is actually keeping.
Short. Read it before your next SLD.
We deleted our staging environment
Six months in. The best thing we did was delete a database nobody had ever tested against.
The seedling. Published before the author had an answer — which is the point.
A field guide to evaluating retrieval systems
Recall@k tells you if you found the chunk. It tells you nothing about whether the chunk was useful.
The long one. Has a diagnostic you can paste into a job.
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