我正在運行一個帶有 Wordpress 博客的 RoR 網(wǎng)站，我剛剛在 Wordpress 中使用用戶登錄時由主 (RoR) 站點設(shè)置的 cookie 實現(xiàn)了一個登錄/注銷標(biāo)頭。一切正常，除了當(dāng)用戶登錄或注銷（從 RoR 站點）時，我需要在 wordpress 站點上進(jìn)行硬刷新以查看修改后的標(biāo)頭。我需要解決這個問題。我的問題是 -這是我的緩存設(shè)置的問題，還是我應(yīng)該以不同的方式實施解決方案？我的解決方案我的 RoR 網(wǎng)站會在用戶登錄時創(chuàng)建一個名為“登錄”的 cookie，并在用戶注銷時刪除該 cookie。我編輯了我的子主題header.php以插入此代碼：<?php if(isset($_COOKIE['login'])) : ?> <!-- logged in header --><?php else : ?> <!-- not logged in header --><?php endif; ?>緩存我使用了很多緩存/優(yōu)化插件/服務(wù)/設(shè)置，包括：云焰WP超級緩存自動優(yōu)化Apache 配置來設(shè)置 Cache-Control 和 Expires 標(biāo)題首先，我禁用了 WP Super Cache，因為它的主要功能似乎是緩存 HTML 和 PHP，并且在插件處于活動狀態(tài)的情況下，我需要在標(biāo)頭通過硬刷新更新之前刪除緩存。然后我取消選中 Autoptimze 設(shè)置以禁用 HTML 緩存。然后我檢查了我的 Cloudflare 設(shè)置——我正在使用標(biāo)準(zhǔn)緩存，使用現(xiàn)有的標(biāo)頭，并且沒有進(jìn)行任何縮小。最后我的 Apache 配置似乎是正確的： <IfModule mod_headers.c> ... <FilesMatch "\.(html|htm|php|pdf)$"> Header set Cache-Control "max-age=0, private, no-store, no-cache, must-revalidate" </FilesMatch> </IfModule>作為附加測試，我直接（通過 IP 地址）訪問了該網(wǎng)站，這似乎工作正常。我還在 Chrome 開發(fā)人員工具的網(wǎng)絡(luò)選項卡上勾選了“禁用緩存”，并運行了一些測試，效果也很好。因此，我認(rèn)為現(xiàn)在問題出在 Chrome 上。當(dāng)我查看 HTTP 請求標(biāo)頭時，在注銷或登錄后返回到 Wordpress 站點后，我看到了：Status Code: 200 (from disk cache)當(dāng)我單擊瀏覽器刷新按鈕時，頁面刷新并且標(biāo)題正確。以下是顯示錯誤標(biāo)頭時的 HTTP 響應(yīng)標(biāo)頭：cache-control: private, must-revalidatecf-cache-status: DYNAMICcf-ray: 593e0b2e0cc706c5-LHRcf-request-id: 02baa550c6000006c5e7912200000001content-encoding: brcontent-type: text/html; charset=UTF-8date: Fri, 15 May 2020 15:55:31 GMTexpect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"expires: Fri, 15 May 2020 16:05:30 GMTlink: <https://www.example.com/blog/wp-json/>; rel="https://api.w.org/"server: cloudflarestatus: 200vary: Accept-Encoding,User-Agent
1 回答
慕哥9229398
TA貢獻(xiàn)1877條經(jīng)驗 獲得超6個贊
我終于能夠wget像這樣在服務(wù)器上使用來調(diào)試這個問題：
$ wget https://localhost/blog/ --no-check-certificate --server-response
一旦我禁用了我在 Wordpress 中用于緩存的兩個插件，這個命令就允許我繞過 Cloudflare 并查看 Apache 設(shè)置的標(biāo)頭。
--2020-05-19 13:21:08-- https://localhost/blog/
Resolving localhost (localhost)... 127.0.0.1
Connecting to localhost (localhost)|127.0.0.1|:443... connected.
WARNING: cannot verify localhost's certificate, issued by ‘ST=California,L=San Francisco,OU=CloudFlare Origin SSL Certificate Authority,O=CloudFlare\\, Inc.,C=US’:
Unable to locally verify the issuer's authority.
WARNING: no certificate subject alternative name matches
requested host name ‘localhost’.
HTTP request sent, awaiting response...
HTTP/1.1 200 OK
Date: Tue, 19 May 2020 12:21:08 GMT
Server: Apache
Link: <https://localhost/blog/wp-json/>; rel="https://api.w.org/"
Cache-Control: private, must-revalidate
Expires: Tue, 19 May 2020 12:31:08 GMT
Vary: Accept-Encoding,User-Agent
Content-Type: text/html; charset=UTF-8
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Transfer-Encoding: chunked
Length: unspecified [text/html]
Saving to: ‘index.html’
我注意到 Cache-Control 標(biāo)頭與我的 Apache 配置中的標(biāo)頭不同。
Cache-Control: max-age=0, private, no-store, no-cache, must-revalidate
這是因為 Cache-Control 標(biāo)頭是在根域 Apache 配置中設(shè)置的，而不是為博客設(shè)置的（它由反向代理托管）。
解決方案是將所有 Expires 和 Cache-Control 標(biāo)頭配置復(fù)制到我的博客 Apache 配置文件中，然后瞧瞧：
$ wget https://localhost/blog/ --no-check-certificate --server-response--2020-05-19 16:41:19-- https://localhost/blog/
Resolving localhost (localhost)... 127.0.0.1
Connecting to localhost (localhost)|127.0.0.1|:443... connected.
WARNING: cannot verify localhost's certificate, issued by ‘ST=California,L=San Francisco,OU=CloudFlare Origin SSL Certificate Authority,O=CloudFlare\\, Inc.,C=US’:
Unable to locally verify the issuer's authority.
WARNING: no certificate subject alternative name matches
requested host name ‘localhost’.
HTTP request sent, awaiting response...
HTTP/1.1 200 OK
Date: Tue, 19 May 2020 15:41:20 GMT
Server: Apache
Vary: Accept-Encoding,Cookie,User-Agent
Link: <https://localhost/blog/wp-json/>; rel="https://api.w.org/"
Cache-Control: private, no-store, no-cache, must-revalidate
Expires: Tue, 19 May 2020 15:41:20 GMT
Content-Type: text/html; charset=UTF-8
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Transfer-Encoding: chunked
Length: unspecified [text/html]
Saving to: ‘index.html’
為了完整起見，請參閱我的博客的新 Apache 配置：
# avoids sending hackers too much info about the server
ServerTokens Prod
<VirtualHost *:8080>
ServerName www.example.com
ServerAdmin dagmar@example.com
ErrorLog /var/log/apache2/blog/error.log
CustomLog /var/log/apache2/blog/access.log common
DocumentRoot /var/www/blog
<Directory /var/www/blog>
AllowOverride All
Options -Indexes
</Directory>
# Enable Compression
<IfModule mod_deflate.c>
SetOutputFilter DEFLATE
SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip dont-vary
SetEnvIfNoCase Request_URI \.(?:exe|t?gz|zip|bz2|sit|rar)$ no-gzip dont-vary
Header append Vary User-Agent
</IfModule>
# Enable expires headers
<IfModule mod_expires.c>
ExpiresActive On
ExpiresByType image/jpg "access plus 1 year"
ExpiresByType image/jpeg "access plus 1 year"
ExpiresByType image/gif "access plus 1 year"
ExpiresByType image/png "access plus 1 year"
ExpiresByType text/css "access plus 1 month"
ExpiresByType application/pdf "access plus 1 month"
ExpiresByType text/x-javascript "access plus 1 month"
ExpiresByType text/javascript "access plus 1 month"
ExpiresByType application/javascript "access plus 1 month"
ExpiresByType application/x-javascript "access plus 1 month"
ExpiresByType image/x-icon "access plus 1 year"
ExpiresByType text/xml "access plus 0 seconds"
ExpiresByType text/html "access plus 0 seconds"
ExpiresByType text/plain "access plus 0 seconds"
ExpiresByType application/xml "access plus 0 seconds"
ExpiresByType application/json "access plus 0 seconds"
ExpiresByType application/rss+xml "access plus 1 hour"
ExpiresByType application/atom+xml "access plus 1 hour"
ExpiresByType text/x-component "access plus 1 hour"
ExpiresDefault "access plus 0 seconds"
</IfModule>
# Enable caching headers
<IfModule mod_headers.c>
# Calculate etag on modified time and file size (could be turned off too ?)
FileETag MTime Size
# NEVER CACHE - notice the extra directives
<FilesMatch "\.(html|htm|php)$">
Header set Cache-Control "private, no-store, no-cache, must-revalidate"
</FilesMatch>
</IfModule>
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