[improve] add lookup mertics

[JNSimba]

Proposed changes

Issue Number: close #xxx

Problem Summary:

Add lookup mertic
hitCount: the number of cache hits
missCount: the number of cache misses
loadCount: the number of times put into cache

Checklist(Required)

1. Does it affect the original behavior: (Yes/No/I Don't know)
2. Has unit tests been added: (Yes/No/No Need)
3. Has document been added or modified: (Yes/No/No Need)
4. Does it need to update dependencies: (Yes/No)
5. Are there any changes that cannot be rolled back: (Yes/No)

Further comments

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