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Questions tagged [cache]

Use this tag when dealing with data that is being cached.

17
votes
9answers
10k views

How to improve server response time?

What can I do, other than using a cache plugin like jotcache, to improve the server response time of my website? I have already removed all inactive articles modules, plugins and components, is there ...
12
votes
2answers
649 views

Difference between standard cache options

Joomla! have a 3 different way for caching: "Conservative caching" (in global configuration) "Progressive caching" (in global configuration) plugin "System - Cache" I have the following questions: ...
11
votes
1answer
2k views

How can I use Joomla's Cache with my components view?

As is typically the case with a CMS, the most hits occur while it is still "new". I'd like to cache the page output the first time it is rendered for a given period as to reduce the heavy workload ...
8
votes
3answers
3k views

No notification to update to latest Joomla version

I am managing a site powered by Joomla 2.5 (online installation) and hosted on Joomla free hosting. Only since the latest 2-3 months it happens that I don't receive anymore the emails reminding to ...
8
votes
0answers
360 views

Reverse Caching Support using nginx

How can I implement Reverse Caching Support using nginx mentioned in Joomla 3.6 features? Joomla! 3.6 now supports reverse caching proxies like Varnish or an NGINX caching proxy. These help to ...
7
votes
3answers
2k views

CSS Change won't apply - Where could the cache be?

I've encountered a strange problem that I've never seen before. I edited a CSS file and uploaded it to my server. From my hosting's file manager, I can see the file is updated. But in my local ...
7
votes
2answers
446 views

Can't turn on cache in 3.4.4

I have a complex install of Joomla 3.4.4 with jSeblod and many other extensions. We are planning to use Varnish4 in front of the web server and because of that need to turn on proper Cache-Control ...
6
votes
2answers
221 views

Updating deprecated methods

I'm updating an old bit of custom Joomla plugin, and there's a deprecated line saying JResponse::allowCache(false); -- what's the "right" way to handle this for Joomla 3.x compatibility? Also, ...
6
votes
1answer
206 views

Persistent problem with Joomla cache

I have a Joomla site which has had persistent on-going problems with its cache. We are able to resolve these problems as they happen by going to the admin panel and clearing the caches, but would ...
6
votes
1answer
90 views

What should be last, cache plugins or CDN plugins?

I'm running several plugins to try to speed up our site and make the load on the server a bit lighter. I've got JotCache and NoNumber Joomla CDN running, along with the template itself compressing ...
5
votes
5answers
1k views

How to force cache/browser data clearing in browser?

Scenario: I have upgraded an old Joomla! website from 2.5 to the latest version of Joomla!. After doing so the site from my point of view looks as it should. If I try to access the site from another ...
5
votes
1answer
277 views

How do I use Joomla's built-in cache busting technique for scripts and stylesheets?

JHtml::script and JHtml::stylesheet have a cache busting technique that doesn't seem to be documented clearly. How do I go about using it?
5
votes
2answers
654 views

Rapid Ajax calls causing some MySQL queries to be ignored

I am currently working on a Joomla website on a Unix server. There are no users connected at the moment because I'm the only one who can access it (so no heavy traffic). During testing, I proceed to ...
4
votes
1answer
124 views

Site keeps browsing itself all the time

I run the server where this Joomla! site is hosted, so I have root access to it. There is something in the configuration, or somewhere in its code, that keeps browsing the site itself. If I run # ...
4
votes
2answers
125 views

Website speed is awful

I work as an apprentice web developer who has been left in charge of the web team (all of my colleagues have left) and have been left with an impossible task. We have a 10-core Windows server, with ...
4
votes
2answers
2k views

Custom component no-cache setting

I have a custom component I've built, and it has a search filter toolbar to filter results. The problem is that when Joomla caching is turned on, the filters get cached along with the page data-- so ...
4
votes
1answer
66 views

Caching a component's view for less than a minute

I have a component which has a feed. This feed updates constantly, pulling information from external sources. To reduce pressure on my server at high traffic periods, I want to give the generated feed ...
3
votes
2answers
179 views

ZOO Cache extremely big - 170 GB and growing!

I have set up a site for a customer. The site uses both Zoo and Widgetkit, many products, services and news pages have some Widgetkit slideshow in them. There are "quite a few" pages and images.......
3
votes
2answers
6k views

My content updates won't display instantly in the front-end. What's the reason?

I am using joomla to create my website. Everything is working well, except one problem that occurred recently. I am changing/updating content in the joomla backend and saving. But any change I do ...
3
votes
1answer
1k views

Using JCache to clear a specific plugin's cached data

Is it possible to use JCache to clear the cached data for a specific plugin or all plugins? I am using a plugin to display an image and text on a page and I have to clear the cache manually for any ...
3
votes
1answer
43 views

Caching items with different cache lifetime

I'm looking into using Joomla's caching mechanism for a plugin. However I would need to cache the plugin data for a given period of time irrespective of the site-wide cache settings. Is it possible ...
3
votes
1answer
52 views

Component getList cache not loading/saving

I've built a custom component, and I'm trying to make it a bit faster, and while I was rooting through model core files I saw that their getItems() uses a caching to reduce DB queries: $store = $this-...
2
votes
2answers
3k views

What is the Refresh Manifest Cache and why is it causing an error when upgrading Joomla?

When manually upgrading Joomla through the extensions manager, I get the following error: 500 error Installation unexpectedly terminated:Refresh Manifest Cache failed: Extension is not ...
2
votes
6answers
4k views

Changes on a joomla site do not reflect on the front end

I got a a joomla-powered site. Recently I added an article to the back end, published it but it does not show up on the front end of the website. I went further to 'unpublish' some of the articles ...
2
votes
2answers
77 views

How to make redirections cacheable in Joomla?

I am confused. To speed up page load times for visitors of your site, remove as many landing page redirections as possible, and make any required redirections cacheable if possible. Does any ...
2
votes
1answer
209 views

Offline site and facebook scraping

I have just created a new Joomla 3.3.6 website which has always been set to 'offline'. This is because my client doesn't want to launch until a specific date. I have incorporated 'add this' and '...
2
votes
1answer
146 views

class 'JCache' does not have a method 'cleanCache'

According to https://docs.joomla.org/Using_caching_to_speed_up_your_code ,I must use $cache->cleanCache(); if I want to clear the joomla cache in my custom script. That function throws the error "...
2
votes
1answer
1k views

Invalid Token - Login Issue

Joomla 3.4.1 I was hoping somebody could briefly explain this for me. I am not that familiar with tokens, sessions or cache. My site was working fine with no issues however I decided to enable the "...
2
votes
1answer
2k views

Using Joomla with redis

I searched a lot about the subject but I didn't find any good resource, I'm new to server caching technology (redis, memcache,,,etc.) can anyone advice about good server caching and how to use it with ...
2
votes
1answer
2k views

Turn off page caching on a single page

I have page caching turned on. (The cache plugin) This gives a problem on the contact page because it caches the _token aswell. This means only the visitor who triggers the caching for that page can ...
2
votes
1answer
259 views

Joomla Cache Control After User Login/Logout

If i set cache setting to Progressive or Conservative in global configuration setting page, it gives problem for users. Content that should only visible to logged in user will be shown if once ...
2
votes
1answer
2k views

Joomla 3 Website loading without the css

I am using a joomla version 3.+ with k2 and k2store Recently we ran into a issue which we are unable to solve When we enter the site is showing without any css like a regular HTML Page here is the ...
2
votes
2answers
56 views

Disabling cache on specific part of page from above comment

I am facing a problem in part of page of an extension on comments When cache is enabled, there is some json token error due to cache When cache is disabled, the user can easily post in comment Is ...
2
votes
0answers
39 views

Change ZOO cache update frequency

Is there a way to modify the interval that the zoo cache updates thumbnails? OR disable it entirely? I have been sorting through the code and haven't found anyway yet. The problem I am running into ...
2
votes
1answer
94 views

Custom cache for module

I've made a module that needs to cache its output by country, or not at all. I've found this post which describes how to do it with a component, but how would you do it with modules? To turn off ...
1
vote
2answers
843 views

Joomla Template - site design not updating

I am new to using Joomla, I have a temporary hosting account on Demojoomla. I have installed a template called Helix When I go to Extensions > Templates > Styles I can click on my template and ...
1
vote
3answers
1k views

Joomla cache handler only shows memcached

My cache handler in Joomla! only shows 'memcached (experimental)', and not File etc. I was able to change the cache handler in my configuration.php but I'd still like to know why File is not shown as ...
1
vote
2answers
119 views

Having to clear the cache even though caching is turned off?

On on of the Joomla sites I manage, the Cache Settings in Global Configuration -> System is set to OFF - Caching is disabled. However, when we make changes to the articles, it is necessary to go to ...
1
vote
1answer
380 views

Caching component output based on user state variables

I'm having some issues with caching my component output as the user state variables seem to be ignored. I've added them to my controller as follows which works fine when submitting the filter form on ...
1
vote
2answers
332 views

Is there a way to clear the cache in the administration?

I made a change to an admin component, but it's not reflected immediately. Is there a way to make the admin cache refresh? I know with modules you can set cache to none, but this is a component so I ...
1
vote
2answers
170 views

Cant edit my module, blank page with a input select

This is probably a difficult question because i can't give you a lot of information. When i open the edit screen in the adminside of a module it's being shown for a split second and the the page ...
1
vote
1answer
352 views

Why do I have to clear browser cache to see backend changes?

This question is related with Change on the back-end takes 30 mins or longer to show on front-end, what could possible be the cause? When I asked the above question I couldn't see any changes on ...
1
vote
2answers
673 views

Disable Gantry caching

I have a site using RocketTheme free template, and it`s using Gantry framework. Now Ι need to add a page with some PHP code, so using Sourcerer I made a simple page using com_content and including my ...
1
vote
1answer
682 views

What server side caching can be used with Joomla 2.5.x?

I'm currently looking at different server caching options for Joomla. I'm not ready to upgrade to Joomla 3.x yet, so I'm just looking at options for 2.5.x Redis was looking good, but based on the ...
1
vote
1answer
21 views

Can I set the directory that Joomla cache will store data in for my module?

Joomla has a nice "Clear Cache" page that lists cached content and lets you delete it. I'd like to allow cached content from my module to be deleted from there. I'm using Joomla's built-in cache ...
1
vote
1answer
379 views

Joomla 3.7.5 Disable Redis Cache

after updating the Joomla site (hosted on a server with php set to 7.0.18) from version 3.7.4 to version 3.7.5, I found the Radis cache set. I can not disable cache from global configuration, and any ...
1
vote
2answers
300 views

Permission error after updating plugin

I have installed a plugin "Script Merge" after I edit the configuration for the plugin Joomla throws the following error: You are not permitted to use that link to directly access that page (#820). ...
1
vote
0answers
29 views

Caching a page separately for users and guests?

I've written a custom component and I'm trying to improve its performance by including Joomla's caching. One view has additional detail which is only included for logged in users. I've been ...
1
vote
0answers
19 views

JToolbarHelper contents disappearing when cache is enabled

I've setup my custom component using JToolbarHelper for navigation, following the standard set by base Joomla components. Each view contains some variation of the following: JToolbarHelper::title(...
1
vote
0answers
120 views

Setting: Session lifetime and Cache time

Joomla 3.7.5 The default values of both are 15 minutes, which means I have to re-login very often. So I always change it to 60. But I have been aware since long time ago, that when they are set to 60,...