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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102 views

W3 Total Cache plugin integration

I am working on a plugin (widget) that is using some transients that are updated from time to time. That said, when these transients are updated, I think I will need to flush the cache to display the ...
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1answer
21 views

Hook an action when a transient is deleted ? Can't get it to work!

I'm working on a plugin, and it caches a remote page when requested. The file is created with tempnam(). I save the path of that cached file in a transient, using the transient API. Once the ...
1
vote
1answer
80 views

How to prevent/delay MySQL connections when an object cache is used?

We are using an object cache backed by memcached, however I think that WordPress will still connect to MySQL on every page load, which shouldn't be needed if all queries can be handled by the object ...
1
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1answer
392 views

How to optimize 'select found_rows()' query? Several 'high load average' alerts daily

I have 5,000 regular posts, 6,000 posts in one post type and 2,000 posts in another post type. Needless to say, that has made the wp_posts table quite large. Not to mention, I have custom taxonomies ...
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1answer
728 views

Some custom taxonomy child terms not showing in admin. Caching problem?

I have a problem with some custom taxonomy terms. I am using "Types" plugin for creating custom post types and custom taxonomies. I successfully created my postype and hierarchical taxonomy and ...
1
vote
1answer
328 views

w3 total cache and sitemap.xml

I have been installing lately w3 total cache on my wordpress site and today webmaster tools has been mailing an error by sitemap.xml crawling. Sitemap ist HTML. Is anybody experienced this issue with ...
0
votes
1answer
22 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 ...
0
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1answer
24 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 ...
0
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1answer
19 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 ...
0
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1answer
33 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 ?
0
votes
1answer
75 views

pass-protected pages and posts not protected after enter them 1 time

i use wordpress 3.9.2 and i read a lot of article and Q about clear cookies but some of them is too old ( for wp 3.4 and wp-pass with different code) or not solve my problem i have some password ...
0
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1answer
74 views

Manually cache a special, non-WP-but-using-WP page (e.g. Ajax results) with W3TC

Under the active theme folder, I have a search-autocomplete.php file which uses various WP queries to create smart JSON results delivered via AJAX to a jQuery UI Autocomplete input field. It's not a ...
0
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1answer
50 views

Server Variables not recognized in certain posts

I've got a very strange issue that I've never seen in WordPress. I've just converted a big site over to a new responsive theme. The site has about 1,400 articles and there are ads on it. The way we ...
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0answers
46 views

Extending WP_User class and using this sub-class during the whole lifecycle

I am currently struggling with this software design issue I can't seem to get hold of. What I am trying to achieve is the following: for every user on our website, I want to do an API request to a ...
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0answers
176 views

Run oembed separately outside the_content()

I have this structure for my content.php : <div class="featured"> <!--featured image here--> </div> <h1 class="entry-title">Post Title</h1> <div ...
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vote
0answers
239 views

tinyMCE.activeEditor = null WP editor loaded in 'Text' mode?

I have a plugin which saves data via AJAX, and realised that it wasn't sending out any request. I opened up the console to look further, and low and behold when trying to look at the object ...
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0answers
388 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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0answers
131 views

Cache issues with redis and nginx

I have a problem with the rewrite rules in my nginx config file. I am running wordpress with nginx and redis to cache the site. I can get the redis to cache all pages not a problem, but as I am ...
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0answers
96 views

Index page and random posts needs a forced refresh in order to show new content

I have this weird problem with both on desktop and mobile, which requires a manual refresh in order for the index-page to show new posts. It also appears as if the user is not logged in. Basically, I ...
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0answers
220 views

After having installed APC Object Cache Backend transients stopped working

My understanding is that once you enable the persistent object cache, your transients are no longer stored in wp_options but in the cache. Once I installed Mark Jaquith's APC Object Cache Backend, ...
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0answers
34 views

Caching RSS plugin data

I'm developing plugin and I need it's data to be cached, let's assume that it's large RSS feed grabber. Basically data of one RSS feed is about 100 lines of parsed HTML code (about 2KB). On one page ...
0
votes
0answers
4 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
12 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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0answers
13 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
8 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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0answers
21 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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0answers
40 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 ...
0
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0answers
47 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
33 views

w3 total cache : Force minified css to reload on client side when style.css is changed

Im trying to force the minified CSS file generated with the w3 total cache plugin to reload after editing the style.css file. Here's what i did : Empty all cache Add the file version after the ...
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0answers
18 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
76 views

WP Optimization: Multiples call to wp_options table all the time, is this normal?

I've a problem on my site since it is running very very slow and I can't find the cause of this. So I'll need some kind of desperate help from people here. I'll improve the question any time I perform ...
0
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0answers
116 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 ...
0
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0answers
106 views

is_user_logged_in() not working after domain change

I am relatively new to Wordpress and I recently moved a WordPress website from one domain to another. I went through and fixed all the links and references that I could find. Now my website has all of ...
0
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0answers
33 views

Turn off Plugin Manually

I have installed and active wp-super-cache plugin, and It cached an PHP syntax error. I solved the error but can't run my website again because the error.log is still displaying the same error. I ...
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0answers
69 views

How could I exclude login modal from cache?

since I activated the W3 total cache I got a login problem, people write their credentials on login modal but after they press the sign in button, the page refresh but the user's name is not ...
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votes
0answers
150 views

How to do Leverage browser caching for a specific file in wordpress?

I am trying to get my site passed in google speed test. My current speed is 74/100 For java script Leverage browser caching I've added this ExpiresByType text/x-javascript "access 1 month"1 to my ...
0
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0answers
137 views

W3 Total Cache problem with password protected pages

well w3 total cache plugins is really nice and make my speed of loading more fast but seems Total cache have problem with password protected pages and posts . when the password enter and page load ...
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votes
0answers
94 views

Custom php Widget keeps disappearing from the front end

I've created a widget to show custom testimonials on the sidebar. It checks if the post has a custom field 'customer_review' then prints a it on the sidebar. Thing is, the testimonial keeps ...
0
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0answers
120 views

Preventing Cache for Text Content but not for CSS files and Images

I am front-end developer and my knowledge is limited for server-side. Excuse me if I am mistaken on terminology. I have Wordpress blog that I write blog posts about javascript. I update the same post ...
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0answers
13 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 ...
0
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0answers
42 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 ...
0
votes
0answers
36 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 ...
0
votes
0answers
87 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 ...
0
votes
0answers
44 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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votes
0answers
24 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 ...
0
votes
0answers
42 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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0answers
335 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
21 views

Cache plugin Cache all Pages by cron

Does someone know if there is a cache plugin where you can choose if you can cache all pages at once? And if possible with a cron!
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0answers
59 views

cache reset button and question about deleting cache

I need to put a "delete cache button" on front-end pages. I am looking for plugins for it. any experience or recommendation for it? Can you recommend me a plug in when i create a reset button? What ...
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votes
0answers
11 views

post views functions not working correctly with plugin cache

Im using Wp-rocket wordpress plugin Cache and functions for calcul post views But after installing the Wp-rocket cache the wp functions views not working correctly. how i can use AJAX to call my ...