What are the different caching eviction strategies in ASP.NET Core?

What are the different caching eviction strategies in ASP.NET Core?

In ASP.NET Core, common caching eviction strategies include Least Recently Used (LRU), Absolute Expiration, and Sliding Expiration. LRU removes the least recently accessed items, while Absolute Expiration sets a fixed time for cache items to expire. Sliding Expiration resets the expiration time on access.

Can you explain how LRU works in more detail?

Sure! LRU keeps track of the order in which items are accessed. When the cache reaches its limit, it evicts the least recently accessed item to make space for new entries. This strategy is effective for scenarios where recently accessed data is likely to be accessed again.

What are the pros and cons of using Absolute Expiration?

The main advantage of Absolute Expiration is its simplicity; you set a fixed time for items to expire. However, the downside is that it may evict items that are still relevant if they haven't been accessed recently.

How do I implement these strategies in my ASP.NET Core application?

You can implement these strategies using the IMemoryCache interface in ASP.NET Core. For LRU, you can simply add items to the cache, and it will manage eviction automatically. For Absolute and Sliding Expiration, you can specify expiration options when adding items.