Cache sidebar site-overview

[jiangtj]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines.
• Tests for the changes was maked (for bug fixes / features).
  • Muse | Mist have been tested.
  • Pisces | Gemini have been tested.
• Docs in NexT website have been added / updated (for features).

PR Type

What kind of change does this PR introduce?

• Bugfix.
• Feature.
• Code style update (formatting, local variables).
• Refactoring (no functional changes, no api changes).
• Build related changes.
• CI related changes.
• Documentation content changes.
• Other... Please describe:

What is the current behavior?

#545
#539
#661

Does this PR introduce a breaking change?

• Yes.
• No.

[jiangtj]

Add a little cache, this time just the sidebar.... 😂

[stevenjoezhang]

#547

等Hexo处理 hexojs/hexo#3624

如果合并了，需要revert以下两个PR
#42
#87

[jiangtj]

#547

Tested in https://jiangtj.gitlab.io/next-test/gemini/, TOC is OK, because I don't cache it.

我知道有许多地方需要缓存，但是一点点来会更好，避免出错。。。
I know there are many places that need to be cached, but it will be better in a little bit to avoid mistakes. . .
😟

Hexo

Hexo

Test WebSite for four schemes in Next

[Liam0205]

test report:

• base: v7.2.0, compare: Cache sidebar site-overview #971 .
• generating time costing: 10+min, 1.3min.

GJ! thanks @jiangtj

[Liam0205]

BTW, next time, you could notify me on GitHub issue. @jiangtj

[jiangtj]

BTW, next time, you could notify me on GitHub issue. @jiangtj

😂 Okay, thank you for your test.

Others still need to be cached, it is expected to be around 1min. Waiting next time.