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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2k 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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223 views

w3 total cache - Object Caching 2165/2469 objects?

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
126 views

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

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
65 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
59 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
215 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
445 views

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

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
228 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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1answer
1k views

How can I add Expire headers to images?

I'm trying to speed up my site a bit. How can I add Expire headers to images I upload? Must this be done with Apache configuration, or is there a setting or plugin to do the job?
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2answers
224 views

What archive plugin works with W3 total cache?

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
828 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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1answer
31 views

WordPress aggressively caching CSS

I’m absolutely fed up at this stage. I just activated a new theme on my WordPress site. I activated it at about 7pm GMT and since then I’ve been trying to change the style. I’ve updated the CSS (I’m ...
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32 views

Wordpress PHP 5.5 and OPcache

I have tried to run on my Apache 2.4 and PHP 5.5 OPcache. My admins turned it on for me but the site was not faster - it was slower. Is there a how-to somewhere or a code snipet needed in WordPress ...
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1answer
31 views

Combine CSS files from all plugins into main stylesheet manually or use a caching plugin?

I like to keep my code organized and be careful of any automated jobs from plugins and software. Is it a good practice to open the plugins and find all the calls of their css file and replace it with ...
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0answers
11 views

Updating WordPress or plugins causes site issues (due to API, I think)

I have a problem with all of the sites I host on my server. Whenever someone updates WordPress of plugins, I manually have to restart Apache to get things to work properly. Should the update process ...
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0answers
37 views

Set Session Time Limit for Password Protected Posts

I have made a series of posts and pages password protected on my website using the built-in Visibility setting. They all use the same password, so the user can view all of them after entering the ...
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0answers
17 views

Is MySQL query_cache useful for WordPress?

Starting from 5.6, if you use InnoDB as the default engine and query_cache is now officially disabled. We've a quite moderate traffic wordpress site and experience a major downtime when we upgraded ...
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1answer
30 views

Serve content from centralized location

I'm looking for an easy/efficient way to manage & serve content from one master WP site to multiple drones (NOT multisite). On the master site i'll have custom post type "served_content". The ...
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0answers
27 views

Post not showing up sometimes on website

I have a weird problem. A particular post is not showing up on my website sometimes. So If I clear cache then it shows up. It is happening only to one particular post. I am not able to figure out what ...
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0answers
15 views

How to cancel a custom post type query based on existing cache file

Is there a proper way to greatly restrict the query (or remove it altogether) for a custom post type type-single.php file? Simply stated, for reasons of speed speed speed I've cached all relevant ...
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1answer
22 views

Browser Cache causes 'Orderby=rand' to return the same posts

I have a code that redirects users to a random post whenever they visit the homepage: if (have_posts()) { query_posts('orderby=rand'); while (have_posts()) { the_post(); ...
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0answers
18 views

Should I use transients for these API call results?

I am consuming an API that gives me a list of people and their profiles. My initial idea was working perfectly fine when it's just the list of people because I was just saving the ids and names using ...
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0answers
34 views

Why does my css file keep caching on wp-multisite?

I am quite a newbie in web design and I hope someone can solve this problem for me, I have also tried wordpress forum but can't find the answer. I have a multisite (sub domain) with a strange caching ...
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1answer
144 views

Failing to open advanced-cache.php which is breaking Media Library

On my WordPress install, which is 3.8 and has all plugins updated, it is using Magic Fields 2 and Hypercache amongst other plugins. I can't insert images into posts because when I upload, it gives me ...
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38 views

Splash pages on a high traffic site

Could use some advice here. We have a fairly high traffic site web site using WordPress. Currently we have two VPS servers managing the site, one that holds WP, one that holds MySQL. The WP servers ...
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1answer
23 views

Page updates appear in Preview but not live version?

I have made some changes to a blog page and excluded some categories. However, whenever I view the blog online the excluded posts still appear. But when I got to the blog page and click 'preview' the ...
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39 views

White screen of death WP multisite memcache

We have a WordPress multisite running 3 blogs and have had http://pecl.php.net/package/memcached installed by our hosts. We have tried the Memcache Object Cache plugin, we'll refer to it as MOC from ...
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124 views

Wordpress Varnish Age=0 or Not Caching (Cookies?)

I'm using Wordpress 3.8.1 and Varnish 3.0.5. I'm sure the Varnish is not caching, because of the VCL nightmare. And i also don't know where is the very standard / correct VCL for Wordpress. My ...
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1answer
26 views

How to enable Zend Optimiser+ with Batcache

I am using Batcache with APC Object Cache Backend so far. A lot of posts on internet claiming that using Zend Optimizer instead of APC would reduce CPU and memory usage. I could enable Zend ...
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1answer
84 views

How Can I Safely Remove WP-Super Cache without messing my site up?

So apparently some people cannot view my site because they said it only loads the sidebar. This only happens to some people and it only started happening after I installed the w3 super cache. I've ...
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0answers
38 views

How to total cache a specific PHP file?

How do I cache specific file in WordPress? I have a file in a theme in WordPress and W3 Total cache. The file has a .php extension and is loading dynamic CSS from database. It takes too much time to ...
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0answers
42 views

My website resets when accessing the index page

So my wordpress theme and website is on a stage server, since it's under production. And this issue happens once in a while. Basically, if I log in as a user, and when I enter the index page, the ...
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0answers
64 views

Nginx + W3 Total Cache not working

I have a Ubuntu 12.10 x64 server running Nginx + MySQL, i've installed everything and my wordpress site is perfect. But, at the moment i installed W3 Total Cache, i got an error from Minify which ...
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11 views

Cannot change Object cache IP for Total Cache plugin

I am using Total Cache with Memcached. And right now it is setup to connect to 127.0.0.1. But I want to change the IP. But it's not letting me. When I change it and save it, it reverts to 127.0.0.1. ...
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3answers
208 views

Prevent installation of style.css cookies and file caching

I'm having a problem which I have never encountered before. When I update my style.css file within my child theme, the webpage does not use the new style. I have pinpointed that to a cookie within ...
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1answer
55 views

Under heavy cache conditions, updating the parent theme don't reflect changes with child theme enabled

I use W3 Total Cache, Cloudflare (and CloudFront for media files). I use a Child Theme to customize specifically for my site while maintaining the core theme with the parent theme. Whenever I update ...
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0answers
23 views

Major cache but only on wordpress site

I have disabled all caching plugins, and i have cleared my browser cache, removed my temp browser files - how come i still not seeing my changes going trough on my wordpress page? I wait 20min they ...
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0answers
31 views

Wordpress Cache not working with some ajax calls

I need to install a plugin for caching my wordpress/buddypress pages or at least add define('WP_CACHE', true); to wp-config.php but when I do this, the button "join this group" that uses Ajax calls ...
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1answer
147 views

New Comments not appearing until browser hard refresh

New comments on my wordpress site appears only after I hard refresh my browser and clear my browser cache. I have w3 total cache plugin installed. Is there any setting that I have to tweak to get rid ...
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2answers
31 views

Debug Performance Issues

I've had a WordPress blog I've hosted on Dream Host for several years now. Recently (the past year) my site is going down often. Via Dream Host I found that I'm using up my CPU limit and they are ...
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1answer
54 views

Apache extensions for WordPress' working without troubles

I have a new web server at the Hetzner EX60. With this new site I have many problems. First of all I need to say that I have problems with default theme and without any plugins. I tried to resolve ...
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0answers
92 views

403 forbidden issue in wordpress

i have corner advertisement plugin in my wordpress website, this plugin used to convert given image into swf file and display it in any one of corner with peel effect. this plugin only not working in ...
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0answers
46 views

How to cache WordPress posts without using plugins

In a normal PHP page, I can use the following code to save the current PHP page: ob_start(); // write content echo '<h1>Hello world to cache</h1>'; $content = ob_get_contents(); ...
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2answers
57 views

Session alternative for plugins (due to caching)

I'm building a plugin that picks a random post from the database and delivers the result dynamically to the user. For certain aspects I need to know the post ID that's been randomly selected. Session ...
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0answers
111 views

Nonces and Cache

It's clear that form submissions and AJAX requests, especially sensible ones, need "nonces" to avoid certain exploits. However, with heavy use of caching systems it becomes harder to generate them ...
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0answers
93 views

Does w3 total cache cache widgets?

I wish to know whether using w3 total cache also caches widgets on the sidebar? I have a recent activity widget on the sidebar that displays live activity on the site like user joining, sharing etc. ...
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0answers
116 views

W3 Total Cache Minify Problem - Disabled Minify, but Problem Persists

I disabled Minify months ago because the problem would not get fixed, version after version of W3TC. About month ago, I re-enabled it and the problem persisted. So i disabled minify, but now I am ...
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24 views

Image is accessed twice with and without timestamp?

I am using w3total cache(0.9.2.11) and each image is accessed twice with and without timestamp ie yellow-folder-450-253.jpg?timestamp=1380777548041 and yellow-folder-450-253.jpg How can I remove the ...
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2answers
378 views

Chrome won't refresh

Have this really strange issue that just cropped up - I schedule my posts for 6am every day and for some reason when I go to the site using Chrome it won't show my latest posts. Self hosted with ...
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0answers
13 views

Image not appearing when I update in a sidebar widget

Is there a cache or something to empty in wordpress when I make updates? On this site: http://richardclunan.com/ in the sidebar (or down the bottom if you're on a small screen) -- there's a widget ...