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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1answer
477 views

Headway body classes and W3TC page cache conflict

I'm currently working on a website using WordPress, Headway, Modernizr and W3 Total Cache. The problem I'm having is that W3TC is caching the body tag, which means that this isn't being updated ...
0
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1answer
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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3answers
308 views

Transients vs CRON +Custom Fields: Caching Data Per Post

Wanted some opinions on a solution I'm trying to come up with: I have a fan/enthusiast plugin I'm working on for fans of TV shows. One of the custom post types attached to the plugin is a release ...
0
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4answers
4k views

Speed up Wordpress

I don't have the feeling that my blog is particularly slow, but that's because I haven't really started out yet. I'm very worried that it will get slow soon, especially because I will have blog posts ...
1
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1answer
136 views

Reasonable Size Limit to options entry

I have a set of ~4700 records that I need to have locally searchable for my plugin via an auto-complete (it's the Google Product Search categories). Would it be okay to store this data in the options ...
4
votes
2answers
1k views

Forcing reload of editor-style.css

Is there a method to force the refresh of editor-style.css, when I change manually the stylesheet for the TinyMCE editor? Modification doesn't show immediately but they will be cached in the admin ...
0
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1answer
221 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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3answers
2k views

w3 Total Cache not Caching - Requested URI is rejected [closed]

For some reason Total Cache does seem to be caching my pages. Each time I got to a page, when I view source, the Total Cache comment shows that it regenerated the page for this request. What worse, ...
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1answer
120 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: ...
0
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1answer
541 views

Combile External JS files using W3 Total Cache

Is there any option or is it recommended to combine external JS files using W3 Total Cache plugin for wordpress. When I say exxternal JS files, I mean that I want to combine .JS files that on other ...
5
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1answer
147 views

Will I see a performance hit if I use native API calls like get_the_title() instead of $post->post_title?

Let's say I've already got the $post object through some earlier process of looping through an array of IDs and using get_post() on each one of them, storing the resulting object in some array. Later ...
3
votes
6answers
346 views

Does a low traffic Wordpress site need a caching plugin and a CDN

I notice that many Wordpress tips websites recommend using wp totalchache and similar plugins. I tried it on one site that gets a relatively small amount of traffic, and hardly notice a difference in ...
3
votes
1answer
180 views

Can someone explain Wordpress caching, and what's the best in my scenario?

I'm creating a website that has two basic user groups: Subscribers and Editors. Bot can create posts via a custom form using wp_insert_post(), but Editors are allowed to mark a post as private, ...
1
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1answer
143 views

Mixing Tweets with Posts

I have a client who wants their blog to display both Posts and Tweets in chronological order. These should be mixed into the same feed. I didn't find any plugins that accomplished this, although there ...
0
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1answer
63 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, ...
0
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1answer
352 views

W3 Total Cache and IIS7 not doing much

I have my WordPress blog up and running on an IIS7 server and I installed W3 Total Cache. At some point prior to WordPress 3.2 upgrade, everything seemed to be working, but since then (and quite ...
-1
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2answers
236 views

Are get_bloginfo queries cached to start, or should they be cached?

I was just wondering if calling get_bloginfo too many times was going to harm performance in a theme and if the data should just be put into its own var?
7
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2answers
582 views

Pros and Cons for high “expire time” on wp-super-cache or w3-total-cache?

In the wp-super-cache page, there is the following sentence, which I do not understand:: Checking for and deleting expired files is expensive, but it’s expensive leaving them there too. On a ...
3
votes
3answers
344 views

Stylesheet switching and caching

I'm implementing a site that allows users to switch stylesheets (to show a high contrast version for people with vision impairments). The switcher essentially just changes the <link>ref to ...
0
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2answers
58 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 ...
1
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1answer
307 views

Transients API and multisite

we're using the Atlas HTML sitemap plugin, which caches the sitemap using the transients API with a call like: set_transient( 'dmac_html_sitemap', $output, 60*60*24*7 ); Now, we also have a ...
1
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2answers
640 views

Plugin Expires Headers - W3 Total Cache

Using the Google PageSpeed Online, it looks like the CSS/Images/JS files of most of my plugins (including wp-nivo-slider) do not get their expires-headers set. Is there a solution for this so that W3 ...
3
votes
1answer
1k views

Writing a cache manifest file for a WordPress blog (app cache, offline web applications)

I'm wondering if anyone has implemented Offline Web Applications from HTML5 in a WordPress blog? When you write a manifest file, all files must be accounted for, thought you can specify the wildcard ...
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1answer
65 views

Is the object cached?

I have a function to instantiate a class to provide var access to other functions. function my_data(){ global $post,$the_data; $postid = get_the_ID(); $the_data = new MY_Class ( $postid ); return ...
1
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1answer
359 views

Transient / object cache maximum key length [duplicate]

Possible Duplicate: Long option names fail silently? The WordPress Transients API makes it easy to save expensive values and look them up later. If you install an object backend (such as ...
2
votes
1answer
334 views

Creating your own widgets: using cache?

I'm in the process of making my own widget but I don't like it to fully generate the content each time since the process is quite lenghty. I can easily create my own caching mechanism but I'm ...
0
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1answer
156 views

Cache DB queries result

On my new site i am displaying most of the images instead of text. I show images for recently written, recently viewed, mostly viewed posts etc. I found that in 40% of cases posts are same. so i need ...
2
votes
2answers
2k views

Clear cache when a post is submitted

I have a question. How can I clear the cache when a post is submitted ? Actually, I need to clear two speficied pages which display these articles ? By default, I have noticed the index.php is ...
2
votes
2answers
1k views

How to make dynamically-generated content searchable in WordPress?

I'm writing a plugin for WordPress that dynamically generates content from a Google Documents Spreadsheet. Specifically, the plugin provides a shortcode that generates a good-looking staff list. It ...
10
votes
4answers
2k views

Optimize apache for WP use

Greetings, I have a WP site with over than 150k pageviews /day. It's running on a Intel Core i5 CPU 760 @ 2.80GHz, with Centos and 4 GB of RAM. The problem is WP consumes too much RAM and after a ...
0
votes
3answers
654 views

What hooks to hook onto for automatic cache clearing

I have a WP-site with not that many writes, but quite a few reads and a few specific hotspots in the templates that I'd like to cache pretty aggressively with my own PHP-caching mechanism. I could ...
0
votes
1answer
2k views

Can I ignore caching of a plugin in W3 Total Cache?

I currently have a plugin that lets me display a random post in a widget. The problem is that if I activate w3 total cache it will only display that post as long as the cache hasn't been cleared. Is ...
1
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1answer
597 views

Getting soft 404 errors (200 status) when caching plugins are enabled

I have a blog running the latest stable version of WordPress on a dedicated virtual server with the following situation. (Replace [caching plugin] with W3 Total Cache, Hyper Cache, or Quick Cache, as ...
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3answers
228 views

Does WordPress's HTTP API use any caching?

I'm working on a plugin to will retrieve data from a remote server and display it on the Dashboard. To do this, I'll be using the WordPress HTTP API but I'm not seeing any information on the HTTP API ...
1
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3answers
482 views

My WordPress site always displays a cached version of its homepage

First of all, sorry if I'm making a mistake. I already asked this on the ServerFault forum, but got no answers at the moment and I thought it would be a good idea to ask the question here, considering ...
1
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0answers
137 views

My WordPress site always displays a cached version of its homepage

I have a WordPress site that runs fine, but there's a strange behaviour: one a reader loads the page, the site shows a "cached" version of the site, with the same news and comment numbers that the ...
0
votes
1answer
1k views

W3 Total Cache can't create files

I want to use W3 Total Cache plugin. Installed plugin succesfully but i'm trying to enable Page Caching and i'm getting this error : Page caching is not available: advanced-cache.php is not ...
3
votes
5answers
769 views

Best WP cache plugin for large site

I'm looking for WP cache plugin which is able to handle large number of pages. approx. 1 mil. I'm considering W3 total cache , WP super cache and few more , unfortunately I don't know which one is the ...
0
votes
2answers
4k views

How do I force Wordpress to show most recent version of images in the media library?

My workflow is sometimes the following: Delete many images from the media library at once (named for example, 01.jpg, 02.jpg, 03.jpg...). Re-upload a series of images with the same file names ...
0
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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 ...
2
votes
3answers
1k views

Does a query executed through wpdb class get cached?

I am not sure how WordPress cache the queries. I had the impression that whenever I execute a query through wpdb class, it gets cached. For example, on codex under Select a Row and Select a Var, it ...
2
votes
6answers
814 views

WP script versioning breaks cross-site caching?

I am loading JQuery from the google CDN using the following code: wp_deregister_script('jquery'); wp_register_script( 'jquery', // handle - WP uses this name to refer to script ...
13
votes
6answers
7k views

W3 total cache - cache refresh programmatically

I am building a Digg like website in WordPress. After installing W3 Total Cache, I noticed certain elements such as number of votes (and voters ids) per post are cached even though they shouldn't be ...
1
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2answers
764 views

WP Super Cache separate cache for mobile

I'm using the WP Super Cache plugin and inside my theme I have code that executes differently if the site is viewed on a mobile device (iOS, Android) than a desktop browser. How do make WP Super ...
0
votes
1answer
434 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 ...
1
vote
5answers
257 views

When use a cache system with WordPress

(sorry if this is duplicated but I couldn't find anything related) I have an WordPress 3.0.3 instalation with some custom coding and tried the W3 Total Cache plugin but had some problems...so I've ...
0
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3answers
387 views

Spam injected in w3 total cache page cache

I'm trying to fix a site which has been injected with external spam. After inspection I found out that the external content (so far just html advertising different kinds of drugs, no scripts) was in ...
2
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1answer
213 views

Should the page cache be refreshed often?

In the w3 total cache there is the option to set the time until the cache is flushed (and thus, recreated on the next time a visitor comes by). My question is, assuming I've got a lot of content on ...
0
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2answers
221 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 ...
0
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1answer
76 views

How can I permanently cache or “archive” a WP blog without needing future maintenance

I have a client who has an annual complete makeover of their website design and content, but they still want their old sites available to view (each with that year's respective design/CSS). Once ...