Spring Speficification default Redis key generator

[trcoelho]

Spring Speficification default Redis key generator

[mp911de]

Redis cannot store objects by their Java identity as the storage happens externally by serializing the key into bytes. Also, a JPA specification has no means of being identifiable in any way since it has no key or other details attached. In your case, it is merely a lambda.

If you want to keep using a Specification as key, I suggest that you create a subinterface (or a wrapper type) that accepts a Specification and a String (key) in your application. Then you register a Converter through RedisCacheConfiguration.configureKeyConverters(…) using the key from your Specification wrapper to create a meaningful Redis key.

Let me know how this goes.

[trcoelho]

Hi @mp911de !
Thanks for your reply!

Yes, that pretty much that I did. Instead mark repository method as @Cacheable, I implemented a new layer that wraps repository calls and this layer I marked as @Cacheable.

So instead we have:

Controller -> Service -> Repository(@Cacheable)

We have:

Controller -> Service -> CacheableRepository(@Cacheable) -> Repository

That would work better as CacheableRepository has one single responsability while Repository remains with database access responsability, in my perspective. :)

Anyways, appreciate your attention as well your suggestion.

Let me know if you have any question.

Take care!