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Java: What deeper point about LRU Cache with LinkedHashMap should a senior Java developer mention?

Difficulty:

Hard

Questions:

1

Time Limit:

2 minutes

Passing Score:

100%

Question

What deeper point about LRU Cache with LinkedHashMap should a senior Java developer mention?

  1. At senior level, the right answer is that LRU Cache with LinkedHashMap exists mostly for historical syntax reasons.
  2. At senior level, the JVM removes the tradeoffs around LRU Cache with LinkedHashMap, so design choices barely matter.
  3. At senior level, any approach to LRU Cache with LinkedHashMap is equally correct if it compiles and passes a small test.
  4. The deeper point is that the classic LRU design pairs hash lookup with ordered node movement so both access and eviction stay efficient.

Hint

Look beyond syntax and explain the runtime, API, or design consequence.

Answer and rationale

Correct answer: D. The deeper point is that the classic LRU design pairs hash lookup with ordered node movement so both access and eviction stay efficient.

The deeper point is that the classic LRU design pairs hash lookup with ordered node movement so both access and eviction stay efficient. This is the kind of tradeoff-aware answer senior interviews usually expect.

Track: Java