{CodeRoyale}
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Multiple ChoiceHard 45s

Thundering herd on cache expiry

Many keys expire simultaneously and every request hits the origin. What mitigates this?
Options
  1. 1Shortening all TTLs down to zero so every key expires immediately
  2. 2Jittered/randomized TTLs and single-flight (coalescing) cache fills
  3. 3Disabling the cache entirely so each request must reach the origin
  4. 4Increasing the thread pool size on the cache nodes to absorb load
architectureresiliencecaching

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