# AbstractEvictionPolicy **class** : `cachebox.system.cache.policies.AbstractEvictionPolicy` This is the abstract class that gives the magic to eviction policies under the CacheBox cache provider. It communicates with the internal object stores and asks for specific metadata in specific sorter orders so the policy can execute its algorithm. Our current algorithms are: *LRU,LFU, and FIFO*. However, you can very easily implement your own. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://cachebox.ortusbooks.com/7.x-1/for-the-geeks/cachebox-architecture/abstractevictionpolicy.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.