What is FIFO caching and how can I implement it?

What is FIFO caching and how can I implement it?

FIFO stands for First In, First Out. It's a caching strategy where the oldest data is removed first when the cache reaches its limit. To implement it, you can use a queue data structure.

Can you provide a simple code example for FIFO caching?

Sure! Here's a simple Python example:

class FIFOCache:
    def __init__(self, capacity):
        self.capacity = capacity
        self.cache = []

    def add(self, item):
        if len(self.cache) >= self.capacity:
            self.cache.pop(0)  # Remove the oldest item
        self.cache.append(item)

    def get(self):
        return self.cache

What are the advantages of using FIFO caching?

FIFO caching is simple to implement and understand. It ensures that the oldest data is removed first, which can be beneficial in scenarios where older data is less likely to be used.

Are there any drawbacks to FIFO caching?

Yes, one drawback is that it doesn't consider the frequency of access. Frequently accessed items might be removed if they are older, leading to potential cache misses.