LRU Cache Implementation | Codewise explanation using Queue & Map | Java Code

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Solution:
- We implement lru cache using queue & map
- Map helps us to fetch data faster
- While pushing value in cache if data is already in cache, we move it to top & update the value. If cache is full, we remove data from last
- While getting the data, we move accessed data to top of queue.

Time Complexity: O(1)
Space Complexity: O(n)

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Комментарии
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Just amazing sir. Just amazing. Big fan

teetanrobotics
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LRU is used in RAM and paging scenario, not sure how database is coming into picture.

pandit-jee-bihar
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don't think so the time complexity is correct. queue.remove is not an O(1) operation because it has to iterate the LinkedList and find the item.

sujittripathy
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How can we design time bound cache where element can be removed from the cache after time expiry

rahulsinghai