How to implement Spring cache with the command/query bus (EHCache, Redis...) about candid-cqrs HOT 4 CLOSED

So I am sure to properly understand the question, are you refering to this type of caching ?
https://springhow.com/spring-boot-redis-cache/

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first apologize for my late reply.
yes but only on requests, because the commands do not need is it possible
and do not pollute the domain as in example https://springhow.com/spring-boot-redis-cache/
and create a cahe decorator for all requests thank you

from candid-cqrs.

You could do something like as described in this PR

This is a "proof of concept" pull request only.
But if you run the application with ./gradlew clean bootRun you should see it working.

It shows how one could theoritically use a single middleware to enable spring @Cacheable features for all incoming queries.

WARNING

• As it is here, there is no time expiration for the cache. This need to be configured at the cache provider level as explained here. I will leave it to you to configure the REDIS.
• Also, I suspect you need to be disciplined and always override hashCode() and equals() on your Query objects if you want to avoid any colision issues with this. Use it at your own risks.

Another way to do it, should you want something more fine grained, would be to use @Cacheable directly on your CommandHandlers and QueryHandlers, the same way you would do with a traditional Spring service. The ones on your Command handlers would evict the cache and the ones on your query handlers register the result in the cache.

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thank you for your help I will be inspired by this to do it with redis

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