Some questions about the behavior of AddInternal function #390

As I understand it, if user add a cache to the CacheManager, the CacheManager should add cache item to each handle.

But the current implementation only add cache item into the last registered handle. [code here]

Here is a scenario, ServiceA is a cache write service, which registers a RuntimeCacheHandle and multiple RedisCacheHandle (Redis1 ~ Redis5) to write, and ServiceB is a cache read service, which registers a RuntimeCacheHandle and one RedisCacheHandle (Redis1).

if ServiceA use AddOrUpdate method to add a cache item, according to the current code logic, this cache item only write to Redis5, When ServiceB wants to get the cache item written by ServiceA from Redis1, this cache not exist because ServiceA not add this cache into Redis1.

I want to understand the intention of this design, looking forward to your reply.