Exclude “301 Moved Permanently” from caching

Hello Marko,

thank you for your effort to help me.

You probably were not replicated the issue because I’ve deactivated W3TC. Now it is activated again.

I’ve been struggling with this for days. And I know now that was my bad to get a 301 redirect into this issue at the beginning. I’we get rid of 301 and now I’ve only 200 responses.

So here it is the situation now. I’m using Firefox and testing on this page https://www.bajkezadecu.com/kviz/kviz-i-nivo/crvenkapa/. Other pages still have 301 and I’ll fix that later.

W3TC deactivated

last fetched: 2020-06-29 17:57:34
last modified: 2020-06-29 17:57:35
expires: Expired Immediately
cache-control: no-cache, must-revalidate, max-age=0

Everything is working OK.

I’ve run three tests.

W3TC activated – without any changes in options

last fetched: 2020-06-29 18:04:03
last modified: 2020-06-29 18:04:05
expires: 2020-06-29 18:09:03
cache-control: max-age=300

Browse Cache -> HTML & XML – I’ve made only this one change
Set cache control header
Cache Control policy: no-cache (“max-age=0, private, no-store, no-cache, must-revalidate”)

last fetched: 2020-06-29 18:15:55
last modified: 2020-06-29 18:15:58
expires: 2020-06-29 18:20:55
cache-control: max-age=300

Last test:
General Settings -> Page Cache: Enable
Page Cache -> Never cache the following pages: kviz/kviz-i-nivo/crvenkapa

last fetched: 2020-06-29 19:10:23
last modified: 2020-06-29 19:10:25
cache-control: max-age=300

If I start the same quiz in five minutes I’ll get the same questions. This is wrong.

I’ve checked the cache folder and page is not cached.

For logged in users everything is working OK. “Don’t cache pages for logged in users” is checked. So, I’m sure that this can work beacuse it is working OK for logged in users. I just don’t know how yet.

Something is changing cache-control.

I’v tried with .js and .css caching also but I think that this is the real problem.

.htaccess file only have this (beside W3TC lines):

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ – [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

I’m open for any suggestion. I’ve found some url for changing functions.php file so I can add cache-control for specific pages.

Thanks…

Hello Marko,

I don’t have httpd.conf file on my hosting (bluehost). Or I can’t find it.

Here is a part of .htaccess file:

# BEGIN W3TC Page Cache core
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{HTTPS} =on
RewriteRule .* – [E=W3TC_SSL:_ssl]
RewriteCond %{SERVER_PORT} =443
RewriteRule .* – [E=W3TC_SSL:_ssl]
RewriteCond %{HTTP:X-Forwarded-Proto} =https [NC]
RewriteRule .* – [E=W3TC_SSL:_ssl]
RewriteCond %{HTTP:Accept-Encoding} gzip
RewriteRule .* – [E=W3TC_ENC:_gzip]
RewriteCond %{HTTP_COOKIE} w3tc_preview [NC]
RewriteRule .* – [E=W3TC_PREVIEW:_preview]
RewriteCond %{REQUEST_METHOD} !=POST
RewriteCond %{QUERY_STRING} =””
RewriteCond %{HTTP_COOKIE} !(comment_author|wp\-postpass|w3tc_logged_out|wordpress_logged_in|wptouch_switch_toggle) [NC]
RewriteCond %{REQUEST_URI} \/$
RewriteCond “%{DOCUMENT_ROOT}/wp-content/cache/page_enhanced/%{HTTP_HOST}/%{REQUEST_URI}/_index%{ENV:W3TC_SSL}%{ENV:W3TC_PREVIEW}.html%{ENV:W3TC_ENC}” -f
RewriteRule .* “/wp-content/cache/page_enhanced/%{HTTP_HOST}/%{REQUEST_URI}/_index%{ENV:W3TC_SSL}%{ENV:W3TC_PREVIEW}.html%{ENV:W3TC_ENC}” [L]
</IfModule>
# END W3TC Page Cache core

I’ve tried to remove everything and stll have the same problem.

Here is the content of .htaccess file from cached folder:

# BEGIN W3TC Page Cache cache
AddDefaultCharset UTF-8
FileETag MTime Size
<IfModule mod_mime.c>
AddType text/html .html_gzip
AddEncoding gzip .html_gzip
AddType text/xml .xml_gzip
AddEncoding gzip .xml_gzip
</IfModule>
<IfModule mod_setenvif.c>
SetEnvIfNoCase Request_URI \.html_gzip$ no-gzip
SetEnvIfNoCase Request_URI \.xml_gzip$ no-gzip
</IfModule>
<IfModule mod_headers.c>
Header set Pragma “no-cache”
Header set Cache-Control “max-age=0, private, no-store, no-cache, must-revalidate”
</IfModule>
# END W3TC Page Cache cache

I’ve also tried to remove this but same result.

I’m not sure where to put “define(‘DONOTCACHEPAGE’, true);” and how to define list of pages. I’ll take a look. If you can help me it would be a great.

Thanks…

Hi Marko,

first of all thank you for your effort to help me. At the end, I wasn’t able to solve this using W3 TC options and .htaccess file.

I’ve found a workaround for this.

I’ve added this code to the end of my theme functions.php file:

function update_header_cache() {
    
    $page_id_nocache = [1360, 1623, ....];
    
    if( is_page($page_id_nocache) ) {
        header('Pragma: no-cache');
        header('Cache-Control: max-age=0, private, no-store, no-cache, must-revalidate');
    }
    
}

add_action( 'template_redirect', 'update_header_cache' );

I’ve even restored caching option (Cache Control policy: no-cache (“max-age=0, private, no-store, no-cache, must-revalidate”) to the default value.

I don’t see a downside of this solution for now. Except that I mess with functions.php file of course :-). And I don’t know how to solve this problem in any other way.

Thank you for your help.