LFU (Least Frequently Used)

LFU, or Least Frequently Used, is a method for managing data in storage or cache. It keeps track of how often each item is accessed. When space is needed, LFU removes the items accessed the least frequently, assuming they are less important or less likely to be needed soon. This approach helps prioritize storing the most useful or popular data, improving efficiency. Essentially, LFU ensures that items used often stay, while those rarely accessed are replaced first, enhancing overall performance by focusing on usage patterns.