What are Cache Eviction Policies?
Cache eviction policies are algorithms or strategies that determine which data to remove from a cache when it reaches its capacity limit. These policies aim to maximize the cache’s efficiency by retaining the most relevant and frequently accessed information. Efficient cache eviction policies are crucial for maintaining optimal performance in systems with limited cache space, ensuring that valuable data is retained for quick retrieval.
Cache Eviction Policies | System Design
Cache eviction refers to the process of removing data from a cache to make room for new or more relevant information. Caches store frequently accessed data for quicker retrieval, improving overall system performance. However, caches have limited capacity, and when the cache is full, the system must decide which data to remove. The eviction policy determines the criteria for selecting the data to be replaced. This post will dive deep into Cache Eviction and its policies.
Important Topics for the Cache Eviction Policies
- What are Cache Eviction Policies?
- Cache Eviction Policies
- 1. Least Recently Used(LRU)
- 2. Least Frequently Used(LFU)
- 3. First-In-First-Out(FIFO)
- 4. Random Replacement