FAQ

FAQ

❓ Why are there so many cache algorithms?

Different workloads → different optimal eviction strategies.

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❓ What does ARC do better than LRU?

• Avoids scan pollution
• Balances frequency & recency
• Self-tunes automatically

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❓ Why use TinyLFU?

To prevent low-frequency items from evicting high-value items.

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❓ Why do we need Count–Min Sketch?

To approximate frequency without storing all keys.