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springlistcachingspring-bootspring-cache

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

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?

Solution

  • 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.