#cache

2 post(s)

Spring Cache:Stop Querying for the Same Order Twice

Cache order reads with Spring @Cacheable and in-process Caffeine, evict on update, and keep JPA entities out of the cache.

Data Structures

LRU Cache:Hash Map Plus Doubly Linked List as One Machine

Least-recently-used eviction is O(1) only when a hash map points at nodes of a doubly linked list. How the two layouts share the work, and LinkedHashMap as the JDK shortcut.