util/kvcache: enhance kvcache (#24242)

[ti-srebot]

cherry-pick #24242 to release-5.0
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# In tidb repo:
git pr https://github.com/pingcap/tidb/pull/25299

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git push git@github.com:ti-srebot/tidb.git pr/25299:release-5.0-73b5e54c65b7

---

Related Issues

enhance statement summary #24086

Record all evicted statements information by sum #24083

This PR enables us getting evicted data from kvcache.

What is changed and how it works?

I changed files in util/kvcache, now you can get evicted key-value pairs from LRU cache by adding a optional function parameter on every Put() method.

By using GoLang's variadic parameter, former usage of function remains working fine.

Related changes

• Need to cherry-pick to the release branch

Check List

Tests

• Unit test

Side effects

• Nothing.

Release note

• changed util/kvcache, enhance simple LRU Cache.

[ti-chi-bot]

@ti-srebot: This cherry pick PR is for a release branch and has not yet been approved by release team.
Adding the do-not-merge/cherry-pick-not-approved label.

To merge this cherry pick, it must first be approved by the collaborators.

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[ti-srebot]

/run-all-tests

[ti-srebot]

@ClSlaid please accept the invitation then you can push to the cherry-pick pull requests.
https://github.com/ti-srebot/tidb/invitations

[crazycs520]

LGTM

[crazycs520]

/run-all-tests

[crazycs520]

@breeswish PTAL

[ti-chi-bot]

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• breeswish
• crazycs520

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