How can I implement LRU caching in SQL?

How can I implement LRU caching in SQL?

To implement LRU (Least Recently Used) caching in SQL, you can use a combination of a table to store the cache and a mechanism to track usage.

What structure should the cache table have?

The cache table should have at least three columns: an ID for the cached item, the data itself, and a timestamp or access count to track usage.

How do I update the access time when an item is used?

You can update the access time by using an UPDATE statement whenever an item is retrieved from the cache.

What happens when the cache is full?

When the cache is full, you should delete the least recently used item based on the access time before adding a new item.