A cache is a component that transparently stores data so that future requests for that data can be served faster. The data that is stored within a cache might be values that have been computed earlier or duplicates of original values that are stored elsewhere.

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4k views

Warning! PHP safe mode enabled!

I just installed WP Super Cache plugin and enabled all settings which were suggested by this plugin. After doing it I am seeing a warning. Warning! PHP safe mode enabled! What is this? What should I ...
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1answer
236 views

w3 total cache - Object Caching 2165/2469 objects? [closed]

Site is: http://kremim.com WordPress 3.2.1 MS, buddypress,bbpress installed. wp_options have 333 records. But Object Caching 2165/2469 objects? Why 2000+ ? Debug: ...
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1answer
144 views

W3 Total Cache Help - How to update DNS Zone for a static domain [closed]

I am running this site: www.thetechnofreaks.com on Wordpress. Recently I came through a plugin that claims to increase the page load efficiency of my site. the plugin details can be found here: ...
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1answer
66 views

Actions to use when flushing cache (when posts are added / deleted / modified)

I'm looking for a list of action tags that are relevant when you: create a post, with any method, so basically using wp_insert_post modify a post, like changing status, title, content, terms, meta, ...
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2answers
66 views

W3TotalCache and Javascript — what should go where, when?

I'm just starting to use W3TotalCache and am a little perplexed by how I should load the gobs of javascript and CSS rendering on the site in the question. Adding some of the pre-minified jQuery ...
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1answer
221 views

How to automatically convert “%” and “+” in image urls on upload

I mass import products via csv and use this plugin http://wordpress.org/extend/plugins/cache-images/ to download the images to my server. Problem is some of the image urls have % and + characters in ...
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1answer
472 views

Minifing js files with w3 total cache and expiring the combined file [closed]

I'd like to clarify several details about how w3 total cache works. I'm using w3 total cache to combine multiple js files into one. I'm also setting expires headers from the browser tab to twenty ...
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2answers
240 views

Error activating certain plugins

When I try to activate All-In-One SEO Pack or ANY (I've tried all by now!) caching plugin, the page goes blank - i.e the content of the page empty, except the WordPress bar on the top and the toolbar ...
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2answers
233 views

What archive plugin works with W3 total cache? [closed]

All plugins I've tried makes the page go blank. I tried so far: Smart Archives Reloaded Clean Archives Reloaded Better Extended Live Archives Thanks. Tal
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1answer
2k views

W3 Total Cache plugin chronic message

I am currently using Amazons Cloud Front service with the super awesome and easy to use W3 Total Cache wordpress plugin. All appears to be working correctly but I do get a chronic error in the admin ...
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0answers
12 views

Recently moved Wordpress site sometimes loads old legacy site. DNS is correct

I had a wordpress site that was used for a year at one location.Recently we decided to move all our web properties under one account so we purchased new hosting and transferred the URL. The site was ...
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0answers
12 views

W3TC object cache item set in PHP command-line is missing when attempted to retrieve it from cache in web browser

I have an expensive DB query. I use a system cronjob to run a PHP script to load Wordpress core and run the query, and store the results in the cache using wp_cache_add() using a cache key and cache ...
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0answers
12 views

Error 500 in single post page after deactivating Wp Cache Plugin

Everything was fine in my blog, until I deactivated the Wp Cache plugin and it suddenly stopped loading every single post pages. It simply appears Error 500 and do not load anything at all, as you can ...
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0answers
29 views

Test if fragment caching is working

I had this fragment caching function added in the `function.php. it goes like this: function fragment_cache($key, $ttl, $function) { if ( is_user_logged_in() ) { ...
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0answers
17 views

Add Hook for clearing transient when post is added

I have this fragment caching implemented in a page. I've got the codes from https://css-tricks.com/wordpress-fragment-caching-revisited/. Which goes like this: function fragment_cache($key, ...
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0answers
23 views

Integrating with external cache solution? Causing problems with ajax nonce validation

We are using an external caching solution (Akamai), and it is causing problems with plugins that use ajax nonce validation, such as Mailchimp for Wordpress. I saw the WP_CACHE define, but it sounds ...
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1answer
34 views

Improving wpdb queries with large data

My plugin will handle large amounts of data that could could result in the queries reading over 5000 items in a database query. The admin will provide a set of CSV files that get stored/organized in ...
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1answer
15 views

How to let users clear their posts cache with WP Super Cache?

Right now with WP Super Cache, when an admin updates a post, the cache is cleared and new cached version is generated. How do I let users do the same with own posts? (When they update their posts the ...
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0answers
41 views

FULL page caching with nginx and using the WP API nonce issues

I want to cache 100% of the response from WordPress via nginx and I've made a lot of strides towards that but one issue I'm having is the nonce required to make API calls against the WP Rest API. I ...
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0answers
79 views

Redis + WooCommerce = Failed?

I have Apache + Redis + Wordpress (WooCommerce) Setup. Like: ( AWS ELB ) + ( 2 x Apache ) + ( Redis ) .. are all on separated Nodes. On Both Apache I have: Wordpress + WooCommerce Tried both: ...
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0answers
25 views

How to add a query string to all images?

My ISP has a cache server that cache all images and cause some problems and get on my nerves. So I decide to add some query string at tail of all image URL to prevent ISP to cache. Now I use this code ...
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1answer
108 views

How to cache bust a child theme style.css

There may be several aspects to my question but I feel in essence it's easy: how do you make sure changes to a child theme style.css are properly propagated across caches? I read in a few places that ...
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1answer
30 views

Are WordPress widgets cached?

I'm not sure if it is true but seems that the content of the widgets is cached. I initially thought there was a problem with my code (I need to hide/show a section in a custom widget according to a ...
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1answer
106 views

W3 total - leverage browser caching not working with cdn delivered images

I'm using W3 total cache for a while now with all my Wordpress installations. Just started to use CDN and I got some problems with leverage browser caching of my files (mostly images) that are served ...
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1answer
47 views

CSS updates appear after delay [closed]

I am using an FTP client to download/edit/upload CSS files of my child theme. Typically that worked smoothly and updates were seen after refreshing the page in the browser immediately. However, on ...
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0answers
121 views

Prevent caching when using wp_enqueue_script?

I am using this to include a custom js file, but i notice if i update the custom-js.js file it doesn't automaticly is the one used? So how do i prevent this js file to be cached? function ...
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0answers
54 views

Website not showing the updated content while visiting through facebook/twitter in-app browser

Website (http://www.gsacademicreflections.com/) not showing the updated content while visiting through facebook/twitter in-app browser. The website developed in WordPress and consists of ...
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1answer
97 views

Completely reload style.css

I have inherited a site, and I'm trying to add new styles to the style.css Things I have tried that have NOT worked Reload browser cache delete WP Super Cache cache Disabled WP Super Cache plugin ...
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2answers
39 views

How to identify which javascript is being executed

I am trying to figure out which script is being called and executed within my Wordpress website. I have website with a number of scripts that are included by the core, the theme and the numerous ...
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0answers
31 views

Should I Save widget HTML to a file cache?

I have w3 total cache installed, but i have a custom plugin that i use to pull information from a large database. I use this to generate sidebar information. For example, i have custom fields for ...
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2answers
205 views

Website keeps going down, is it a plugin, database, memory problem, or something else?

So I've been having a problem with one of the websites I manage. Essentially, we keep seeing the cloudflare 'site is offline' message for at least half the day, constantly and consistently. Whenever ...
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0answers
50 views

How to view W3 Total Cache for testing?

I've attempted to cache JSON endpoints in WordPress by following this post: http://wordpress.stackexchange.com/a/115384 // Modify the output buffer callbacks of W3 Total Cache to work with the JSON ...
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0answers
35 views

can i disable cache plugin in shabbat?

I created a plugin called wp-shabbat, its checks the user ip location and calculate if it shabbat time, if so the plugin creates on the fly page that presents user time to come back and with 503 ...
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1answer
18 views

Plugin files not updated (cache cleared)

I'm manually uploading a plugin that I created, but no changes take effect and the file editor shows no changes unless I change the filenames within the plugin. I've already tried doing this while ...
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0answers
37 views

WordPress Caching

I try something on my local machine. I have a custom JS and CSS file which I included in the functions.php of my theme (twenty fifteen) like this: function load_my_stuff() { wp_enqueue_script( ...
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0answers
50 views

Php function modifying the page's rendering engine buffer and blocking caching plugin

I tried to create a plugin which creates pages based on a CSV or excel file containing hundreds of city names and postal codes. It creates one page per city, with always the same design but different ...
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0answers
64 views

How to decode wordpress transient cache stored in database?

Wordpress stores caches using Transient and saved in wp_options table. I can't read those stored values - a sample snapshot is as below. If you know how to decode/read/parse them, please share.
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0answers
14 views

W3TC recreating cached files, but not uploading them to our CDN. We didn't request the recreation

We're having a weird problem on our production server. We use w3tc to compress and upload CSS and JS to our amazon CDN. After clearing all caches on the site, it works fine initially, then sometime ...
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0answers
21 views

Page wrongly displayed when cache plugin activated

I tried both WP Rocket and WP Total cache, and when activating page caching, my pages look like this: http://www.goldnord.fr/ So all the pictures, animations, structure is gone. Is there a way to ...
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1answer
75 views

htaccess doesn't cache my latest news when logout

To speed up my website i'm using w3 total cache and some htaccess . . . it works just amazingly ! Otherwise, big problem, I have on my homepage the latest news being display, when I'm login, it ...
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0answers
58 views

Object Cache - Avoid db queries totally

I am using object cache and have cached just about all queries but am stuck with the last 3, on a post archive page. They are all wp core queries. SELECT SQL_CALC_FOUND_ROWS wpm_posts.ID FROM ...
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0answers
18 views

XSS Scripting in Cache files

On one of my client's sites I was going through a few of the pages ann noticed a popup appear with a spam advert on it. Finding this highly unusual I inspected the page source and found a bunch of ...
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2answers
173 views

can not login after moving to cloudflare and adding rules

I've move my website using cloudflare - which is amazing in term of speed - ouaw ! in the settings of cloudflare, I have add some rules to make it faster, however since - I cant not login in the ...
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1answer
31 views

String Replace Caching & Chance of Collisions

I am noticing that for various reasons I am using lots of string replacements in Wordpress and I am concerned about this impact on performance once it goes live. I am not advanced in caching but it ...
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0answers
75 views

can infinite scroll work with caching plugins

I want to know whether plugins like infinite scroll (https://wordpress.org/plugins/infinite-scroll/) can work with caching plugins.Will the cache plugins will have same effectiveness.
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1answer
258 views

HIgh CPU usage - Will using cache plugins help

i am having issues with CPU high utilization, more than 92% . Is there anyway to track which plugin or process or user is causing this issue? Will usage of any cache plugin will help this or not ?
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0answers
48 views

Having 4000 posts, my site is so slow

My WordPress sites contains 4000 posts, and the difficulty is that I have to display all of them at one page. You know, it takes ages to do that, sometimes it causes my Firefox crash. Could you guy ...
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0answers
101 views

GravatarLocalCache Plugin Broken in WordPress 4.2

Trying to fix a plugin (https://wordpress.org/plugins/gravatarlocalcache/ not mine) which broke on the 4.2 update. The plugin makes a locally cached version of Gravatar.com avatars. Plugin hasn't ...
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0answers
39 views

Super cache caches mobile pages for desktop

Super Cache doesn't separately cache mobile pages and desktop pages. Sometimes I see a mobile cached pages on the desktop and the vice versa. How to solve this?
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0answers
435 views

Flush RSS Cache

I'm editing my RSS feed by adding extra elements containing custom fields I've created. I'm aware these won't work on standard RSS readers, but I've building a custom page for a different website that ...