hexo server 预览时改动 Markdown 后，刷新浏览器获取到的 HTML 内容不变

[songouyang]

Please make sure you took care of the following things before you submit this issue. Thank you!

• I have set up and configured my blog according to the Hexo docs and the Icarus docs;
• I have looked up Github issues and found no solutions to my problems.

默认主题不会出现此问题，用 icarus 主题就会有此问题。

主题版本：7b88a415d7deef50d2e02b510378d0ff332cdd6a

改成此版本 f5185d52d0723b3391e656f6b02a2b3e768d0fc9 即可获取到最新的 HTML 内容。猜测应该是这个 commit bdaab0f 导致的。
把 LRU 的 size 改成 1 也可以使得 HTML 内容随着 Markdown 的变化而变化

package.json

{
  "name": "hexo-site",
  "version": "0.0.0",
  "private": true,
  "scripts": {
    "build": "hexo generate",
    "clean": "hexo clean",
    "deploy": "hexo deploy",
    "server": "hexo server"
  },
  "hexo": {
    "version": "4.2.0"
  },
  "dependencies": {
    "cheerio": "^1.0.0-rc.3",
    "hexo": "^4.0.0",
    "hexo-generator-archive": "^1.0.0",
    "hexo-generator-category": "^1.0.0",
    "hexo-generator-index": "^1.0.0",
    "hexo-generator-tag": "^1.0.0",
    "hexo-renderer-ejs": "^1.0.0",
    "hexo-renderer-marked": "^2.0.0",
    "hexo-renderer-stylus": "^1.1.0",
    "hexo-server": "^1.0.0"
  }
}

_config.yml

# Version of the Icarus theme that is currently used
version: 2.6.0
# Path or URL to the website's icon
favicon: /images/favicon.svg
# Additional HTML meta tags in an array.
meta: 
# canonical_url of your site
canonical_url: 
# Path or URL to RSS atom.xml
rss: 
# Path or URL to the website's logo to be shown on the left of the navigation bar or footer
logo: /images/logo.svg
# Open Graph metadata
# https://hexo.io/docs/helpers.html#open-graph
open_graph:
    # Facebook App ID
    fb_app_id: 
    # Facebook Admin ID
    fb_admins: 
    # Twitter ID
    twitter_id: 
    # Twitter site
    twitter_site: 
    # Google+ profile link
    google_plus: 
# Navigation bar link settings
navbar:
    # Navigation bar menu links
    menu:
        Home: /
        Archives: /archives
        Categories: /categories
        Tags: /tags
        About: /about
    # Navigation bar links to be shown on the right
    links:
        Download on GitHub:
            icon: fab fa-github
            url: 'https://github.com/ppoffice/hexo-theme-icarus'
# Footer section link settings
footer:
    # Links to be shown on the right of the footer section
    links:
        Creative Commons:
            icon: fab fa-creative-commons
            url: 'https://creativecommons.org/'
        Attribution 4.0 International:
            icon: fab fa-creative-commons-by
            url: 'https://creativecommons.org/licenses/by/4.0/'
        Download on GitHub:
            icon: fab fa-github
            url: 'https://github.com/ppoffice/hexo-theme-icarus'
# Article display settings
article:
    # Code highlight settings
    highlight:
        # Code highlight themes
        # https://github.com/highlightjs/highlight.js/tree/master/src/styles
        theme: atom-one-light
        # Show code copying button
        clipboard: true
        # Default folding status of the code blocks. Can be "", "folded", "unfolded"
        fold: unfolded
    # Whether to show article thumbnail images
    thumbnail: true
    # Whether to show estimate article reading time
    readtime: true
# Search plugin settings
# https://ppoffice.github.io/hexo-theme-icarus/categories/Plugins/Search
search:
    # Name of the search plugin
    type: insight
# Comment plugin settings
# https://ppoffice.github.io/hexo-theme-icarus/categories/Plugins/Comment
comment:
    # Name of the comment plugin
    type: 
# Donation entries
# https://ppoffice.github.io/hexo-theme-icarus/categories/Donation/
donate:
    -
        # Donation entry name
        type: alipay
        # Qrcode image URL
        qrcode: ''
    -
        # Donation entry name
        type: wechat
        # Qrcode image URL
        qrcode: ''
    -
        # Donation entry name
        type: paypal
        # Paypal business ID or email address
        business: ''
        # Currency code
        currency_code: USD
    -
        # Donation entry name
        type: patreon
        # URL to the Patreon page
        url: ''
# Share plugin settings
# https://ppoffice.github.io/hexo-theme-icarus/categories/Plugins/Share
share:
    # Share plugin name
    type: 
# Sidebar settings.
# Please be noted that a sidebar is only visible when it has at least one widget
sidebar:
    # left sidebar settings
    left:
        # Whether the left sidebar is sticky when page scrolls
        # https://ppoffice.github.io/hexo-theme-icarus/Configuration/Theme/make-a-sidebar-sticky-when-page-scrolls/
        sticky: false
    # right sidebar settings
    right:
        # Whether the right sidebar is sticky when page scrolls
        # https://ppoffice.github.io/hexo-theme-icarus/Configuration/Theme/make-a-sidebar-sticky-when-page-scrolls/
        sticky: false
# Sidebar widget settings
# https://ppoffice.github.io/hexo-theme-icarus/categories/Widgets/
widgets:
    -
        # Widget name
        type: profile
        # Where should the widget be placed, left or right
        position: left
        # Author name to be shown in the profile widget
        author: Your name
        # Title of the author to be shown in the profile widget
        author_title: Your title
        # Author's current location to be shown in the profile widget
        location: Your location
        # Path or URL to the avatar to be shown in the profile widget
        avatar: 
        # Email address for the Gravatar to be shown in the profile widget
        gravatar: 
        # Whether to show avatar image rounded or square
        avatar_rounded: false
        # Path or URL for the follow button
        follow_link: 'https://github.com/ppoffice'
        # Links to be shown on the bottom of the profile widget
        social_links:
            Github:
                icon: fab fa-github
                url: 'https://github.com/ppoffice'
            Facebook:
                icon: fab fa-facebook
                url: 'https://facebook.com'
            Twitter:
                icon: fab fa-twitter
                url: 'https://twitter.com'
            Dribbble:
                icon: fab fa-dribbble
                url: 'https://dribbble.com'
            RSS:
                icon: fas fa-rss
                url: /
    -
        # Widget name
        type: toc
        # Where should the widget be placed, left or right
        position: left
    -
        # Widget name
        type: links
        # Where should the widget be placed, left or right
        position: left
        # Links to be shown in the links widget
        links:
            Hexo: 'https://hexo.io'
            PPOffice: 'https://github.com/ppoffice'
    -
        # Widget name
        type: category
        # Where should the widget be placed, left or right
        position: left
    -
        # Widget name
        type: tagcloud
        # Where should the widget be placed, left or right
        position: left
    -
        # Widget name
        type: recent_posts
        # Where should the widget be placed, left or right
        position: right
    -
        # Widget name
        type: archive
        # Where should the widget be placed, left or right
        position: right
    -
        # Widget name
        type: tag
        # Where should the widget be placed, left or right
        position: right
# Other plugin settings
plugins:
    # Enable page animations
    animejs: true
    # Enable the lightGallery and Justified Gallery plugins
    # https://ppoffice.github.io/hexo-theme-icarus/Plugins/General/gallery-plugin/
    gallery: true
    # Enable the Outdated Browser plugin
    # http://outdatedbrowser.com/
    outdated-browser: true
    # Enable the MathJax plugin
    # https://ppoffice.github.io/hexo-theme-icarus/Plugins/General/mathjax-plugin/
    mathjax: true
    # Show the back to top button on mobile devices
    back-to-top: true
    # Google Analytics plugin settings
    # https://ppoffice.github.io/hexo-theme-icarus/Plugins/General/site-analytics-plugin/#Google-Analytics
    google-analytics:
        # Google Analytics tracking id
        tracking_id: 
    # Baidu Analytics plugin settings
    # https://ppoffice.github.io/hexo-theme-icarus/Plugins/General/site-analytics-plugin/#Baidu-Analytics
    baidu-analytics:
        # Baidu Analytics tracking id
        tracking_id: 
    # Hotjar user feedback plugin
    # https://ppoffice.github.io/hexo-theme-icarus/Plugins/General/site-analytics-plugin/#Hotjar
    hotjar:
        # Hotjar site id
        site_id: 
    # Show a loading progress bar at top of the page
    progressbar: true
    # BuSuanZi site/page view counter
    # https://busuanzi.ibruce.info
    busuanzi: false
# CDN provider settings
# https://ppoffice.github.io/hexo-theme-icarus/Configuration/Theme/speed-up-your-site-with-custom-cdn/
providers:
    # Name or URL of the JavaScript and/or stylesheet CDN provider
    cdn: jsdelivr
    # Name or URL of the webfont CDN provider
    fontcdn: google
    # Name or URL of the webfont Icon CDN provider
    iconcdn: fontawesome

[ppoffice]

@songouyang 缓存的HTML不会在修改源文件之后自动更新。这个在Hexo的代码中也有说明。所以这个问题是为了提升性能的一个牺牲。目前没有修复的计划。

[serkodev]

@ppoffice @songouyang

我想了一個方法，就是在 hexo 的 filter.before_generate 中清除 __fragmentCache，當在 server 執行時，便可以在每次更改文件後重置一次 cache，應該不會太影響性能，請作為參考。

在 includes/helpers/override.js 中加入：

hexo.extend.filter.register('before_generate', function(){
    __fragmentCache.clear()
});