Add CacheErrorHandler implementation that logs exceptions rather than rethrowing them

[bananayong]

Hello.

I would like to suggest that the Spring framework provide another CacheErrorHandler Implementation.
Whenever I build a spring application that uses an external cache, I do write a class that implements CacheErrorHandler for just error logging rather than throwing an exception.

Maybe most developers don't want to fail a method invocation when the cache is not available because the original method can return results.

So, If Spring provides another CacheErrorHandler implementation for just logging, will be very convinient.

Thank you!

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[Drezir]

I think that this is why we have org.springframework.cache.annotation.CachingConfigurer mechanism. But the implementation could be done, but the question is which logging level to use? Should it be configurable or not?

[bananayong]

If logging level is configurable It could be very useful, but I think It's ok just WARN.

[snicoll]

Closing in favor of PR #27826 - Thanks @Drezir!