What are cache eviction strategies and why are they important?

What are cache eviction strategies and why are they important?

Cache eviction strategies are methods used to remove items from a cache when it becomes full. They are important because they help manage memory efficiently and ensure that the most relevant data is quickly accessible.

Can you explain some common cache eviction strategies?

Sure! Some common strategies include Least Recently Used (LRU), First In First Out (FIFO), and Least Frequently Used (LFU). Each has its own advantages depending on the use case.

How does the Least Recently Used (LRU) strategy work?

LRU keeps track of the order in which items are accessed. When the cache is full, it evicts the least recently accessed item to make space for new data.

What are the pros and cons of using LRU?

The pros of LRU include its effectiveness in keeping frequently accessed data available. However, it can be more complex to implement and may require additional memory to track access order.