This document discusses using caching annotations in Java code to cache method results returned from a database. It describes adding @ArcusCache and @ArcusCacheKey annotations to cache getCategories method results for 60 seconds. The annotations can generate a cache key automatically based on method parameters rather than requiring a custom key to be passed. Caching improves performance by avoiding repeated database queries if the same method is called with the same parameters during the cache expiration period.