How to cache the list of entires based on its primary key using spring caching

Question

I want to cache the response of the repository class which has the following methods:

@Cacheable(cacheNames = "books", key="#id")
Book findById(Long Id);

@CacheEvict(cacheNames = "books", key = "#id")
void deleteById(Long id);

@Cacheable(cacheNames = "books", key="#book.id")
Book save(Book book);

@Cacheable("books")
List<Book> findAll();

Except the findAll() method, others are working as expected.

How to make findAll() to populate the books cache with book.id as key?

Possible duplicate of [Spring Cache with collection of items/entities](https://stackoverflow.com/questions/44529029/spring-cache-with-collection-of-items-entities) — Matthias, Sep 13 '19 at 09:39

score 4 · Accepted Answer · edited Sep 13 '19 at 09:39

4

You need to provide a customized CacheManager and Cache implementation for your caching provider (e.g. Ehcache, Redis or Hazelcast).

By default, OOTB, Spring's Cache Abstraction does not split up cached method array/collection type return values into separate entries in the targeted cache. You must handle this yourself.

See my last response for this nearly identical question.

edited Sep 13 '19 at 09:39

Matthias

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answered Sep 20 '17 at 23:21

John Blum

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Thanks for the response, it would be better if spring abstraction caching **documentation** has this as a note. – Sri Oct 16 '17 at 02:38

How to cache the list of entires based on its primary key using spring caching

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