How does FIFO cache implementation work?

How does FIFO cache implementation work?

FIFO, or First-In-First-Out, is a caching strategy where the oldest data is removed first when the cache reaches its limit.

Can you explain how it differs from LRU?

Sure! LRU, or Least Recently Used, removes the least recently accessed data, while FIFO removes the oldest data regardless of access.

What are the advantages of using FIFO?

FIFO is simple to implement and can be efficient in scenarios where older data is less likely to be reused.

Are there any downsides to FIFO?

Yes, FIFO can lead to cache thrashing if the oldest data is frequently accessed, as it may be removed too soon.

Can you give an example of FIFO in action?

Certainly! Imagine a cache with a size of 3. If you add items A, B, and C, and then access A, when you add D, A will stay, but B will be removed.