One of the most annoying problems with the System – Page Cache plugin is the fact that when you update an article, then that update won’t reflect on the website immediately, as the cached page would still be served to the visitors and won’t be refreshed until it “expires”. In fact, the absolute majority of […]
Note: The following post assumes that your Joomla website is powered by a WHM/cPanel server and that the Eximstats service is enabled (you can enable the Eximstats service from WHM’s Service Manager). At itoctopus, we go at great lengths to monitor the security of our managed Joomla websites, to the point where we check the […]
On any news site, one of the most convenient things for editors is to have an “Edit Article” link on the article page. Such a link will save a lot of time for the editors since without it they will need to go to the backend, search for the article (which will put pressure on […]
Many Joomla administrators think that 127.0.0.1 is equivalent to localhost when it comes to MySQL connections, and they think that they can change the value of $host in their configuration.php file from localhost to 127.0.0.1 and the website will still work as it should. In reality, if they’re using cPanel, then the website will go […]
A somehow controversial subject in the database world is MySQL persistent connections: Some claim they have a performance benefit, others claim they’re bad and they can cause some memory issues on the server. At itoctopus, we have decided to put an end to the controversy by running experiments on a large Joomla website in order […]
If you’re an avid reader of our blog, then you may already know that we have a passion for optimizing Joomla sites. A passion so strong, that we spend the absolute majority of our spare time researching new optimization techniques. More often than not, our research yields interesting results. For example, about a week ago, […]
We manage quite a few large Joomla sites, and all of these sites get their fair share of bad traffic caused by bad bots. What most system administrators do is that they block these bad bots with an .htaccess rule. At itoctopus, we go the extra mile and we punish those bots. How do we […]
One of the (almost unique) features that Joomla has is “locking” articles. So, when someone is editing an article, that article is locked to prevent others from editing it. The lock is released when the article is “closed” by clicking on the Save & Close button, the Save as Copy button, or the Close button. […]
Almost all Joomla administrators do not think about disabling any core plugins that are enabled by default – which is a fine approach, but not when you’re running a large site. Some of these plugins have very little use for many Joomla sites and, as such, they are better off disabled. Take, for example, the […]
After moving the website of a client from a shared host to a dedicated server (with another company), we got a call from the client telling us that she’s experiencing a weird situation. She told us that when she tries to edit an article on the frontend of the Joomla site, it works the first […]
Note: This post contains a core modification. Keep in mind that core modifications may cause stability issues and may be wiped out with a simple Joomla update. A few months back, we’ve written about the Joomla getAuthors function, and how we initially thought it was there to populate the contents of the Author filter field, […]
Back in January 2011 (7 years and 1 month ago), people started migrating from Joomla to WordPress or Drupal in droves. The main reason for this mass exodus was the absence of a non-technical migration script from Joomla 1.5 to Joomla 1.6 which left many Joomla administrators with 3 options: 1) pay a lot of […]
Back in August 2014, Google stated on their official webmasters blog that their ranking algorithm will start giving an advantage to HTTPS sites over HTTP sites. Back then, many people simply did not care, and did not switch their sites to use HTTPS. However, in the beginning of the last autumn (“the beginning of the […]
A new client called us yesterday and told us that the website of the company he works for is down. He told us that it was displaying a weird error. We immediately visited the website, and we noticed that it was displaying the below error (in red): “1881 – Operation not allowed when innodb_forced_recovery > […]
A regular client who subcontracts work to us emailed us that he wasn’t able to update the website of one of his clients from Joomla 3.8.3 to Joomla 3.8.5. He told us that the update would fail halfway through with the following error: AJAX Loading Error: error Of course, the first thing that we thought […]
Around 10 AM EST yesterday morning, we got a call from a large company telling us that their Joomla website is down as none of their staff members are able to access it. We checked and we were able to access the website. The first thing that came into our minds was that their company […]
Increasingly, we are getting requests from clients asking us to increase the Google PageSpeed Insights (PSI) score of their Joomla sites. Some of them even ask us to get them a score of a 100, which can only be possible if the Joomla website is an extremely basic one. We usually respond that any score […]
Note: The solution in this post is a core modification. Proceed with caution. Another note: This post has been modified on January 31st, 2018 to correct an error. The post has originally been published the day before, on January 30th, 2018. While analyzing the performance of the backend of a Joomla 3.8 website that has […]
A client of ours uses a Joomla article for listing internal announcements (the Joomla website is used as an intranet). The Joomla article contains announcements from 2005 and, each time the company has a new announcement (which literally happens at least one time every business day), that announcement is added to the very beginning of […]
Note: This post is advanced and is mainly aimed at system administrators, but any Joomla administrator can still read it and understand the main points as we have simplified it as much as we can. One of our customers constantly emailed us about people getting randomly blocked from accessing their Joomla website. At first, our […]
For a while now, we were noticing intermittent load spikes on the server powering a high traffic Joomla website of a client of ours. These spikes were troubling, because they were caused by neither the MySQL database nor the PHP instance; they were caused by something else, something that we didn’t know what it was […]
Note: This post is somehow technical. Some PHP knowledge is required to understand it. After updating PHP to 7.2 on the server powering the Joomla website of a major client, we noticed that one of the modules became broken. The module was supposed to display some images with a specific size, and, while the images […]
As of January 1st, 2018, itoctopus will no longer be accepting work from individuals, or from very small businesses (less than 5 employees). Let us explain why… As you may already know, itoctopus has been serving businesses of all sizes for over a decade now. That long period of time has provided us with some […]
Yesterday morning, a client emailed us that he wasn’t able to update his Joomla website from version 3.7.5 to version 3.8.3. He told us that he was seeing an “an ajax error of some sort” after clicking on the Update Now button. We immediately thought that he had permission issues on the restore.php file, but […]
Note: This post assumes that you are using WHM and EasyApache 4. If you aren’t using them but are seeing the same problem, then the heart of the solution is correct (you will need to install the proper MySQL extension, but the implementation is different). It was around 2:00 AM last Saturday when were scheduled […]
A new client called us and told us that they are seeing an Internal Server Error (Error 500) after moving their site from one server to another. They told us that they’re sure that all the files were properly moved (they zipped the Joomla website on the origin server and extracted it on the destination […]
As of Joomla 3.8.0 (and so far until Joomla 3.8.2), the articles model in the com_content extension (both frontend and backend) uses DISTINCT in the main query that returns the articles (in the getListQuery function). For the untrained eye, such a change is harmless, but, to anyone who has some experience in MySQL (and any […]
There are many recipes for a disaster out there, our favorite one is the following: One three-pound European white truffle. Eight ripe fruits from a jellyfish tree. 7 drops of fairy tears. One medium sized hair from the tail of a yellow (#ffff00) unicorn. One onion. Just a regular, medium sized onion. A sprinkle of […]
Most people love mystery movies, there is something thrilling about them. We also love mystery movies, but there is something that we love even more, and it is Joomla mysteries, and yesterday we were fortunate enough that we were assigned to investigate one of these mysteries… At around eleven hundred hours yesterday morning, a regular […]
You haven’t done anything on your Joomla website for 4 weeks, and you are the only authorized person that has access to the backend of the website and to the site’s filesystem/database. Yet, you wake up this morning and you find out that your website (frontend and/or backend), is displaying a blank page. You call […]
While optimizing an already optimized K2 powered Joomla website yesterday, we noticed the following query in the slow query log: SELECT i.*, c.name as categoryname,c.id as categoryid, c.alias as categoryalias, c.params as categoryparams FROM #__k2_items as i RIGHT JOIN #__k2_categories AS c ON c.id = i.catid WHERE i.published = 1 AND i.access IN(1,1,5) AND i.trash […]
This past weekend, a client of ours from Kuwait emailed us and told us that the backend of his Joomla website is displaying a blank page. He told us that the login page to the backend was working, but, as soon as you login, you will see a blank page. He also told us that […]
At itoctopus, we have a strong passion for optimizing Joomla websites, that’s why we always research new ways that may improve their performance. We mostly focus on optimizing the database because sometimes a simple database optimization can have a huge impact on the overall performance of the Joomla website. This time it was no different. […]
Yesterday evening (or very early in the morning today), we updated the Joomla website of a new client from Joomla 3.1.5 to Joomla 3.7.5 (we are waiting for 3.8.2 to be released to update to 3.8). The update was really nothing out of the ordinary: we did see some issues but we fixed them immediately […]
Note: This a very lengthy post. So, it’ll be a good idea to read it first thing in the morning when your mind is fresh and while you’re having your wake up coffee (or tea, or milk, or cold water, or nothing). Another note: This is a very technical and a very advanced post. It […]
A new client emailed us that he was seeing the following error on his Joomla website: Error displaying the error page He told us that he started seeing the above error when the hosting company moved his website from one server to another. He told us that the hosting company debugged the issue for a […]
A few weeks ago, we wrote a post in which we admitted that we haven’t discovered fire. This morning, however, we had a new discovery akin to discovering fire, and it was a very clean, very elegant, very lovely method to check if a user is a super user. It all happened by coincidence when […]
A new client approached us yesterday and told us that they were seeing a blank page on the frontend and on the backend of their Joomla website after updating it to 3.8.0. Since a blank page is a sign of a fatal error, we set the error reporting on the client’s site to “maximum” in […]
Note: This integration consists of a core override. As usual, please keep in mind that core overrides can lead to stability issues and can be wiped out with a future Joomla update. A client of ours asked us to integrate Joomla’s “Email this Link to a Friend” (or “Send Article to a Friend”) with HubSpot. […]
We often get calls/emails from clients stating that the response time of their Joomla websites is suddenly high. They say that the day before everything was fine, and all of a sudden in the morning, the website became super slow. Of course, the first thing that we ask them is: “Has anything changed between yesterday […]
If you’re into Joomla plugin development, then you are most likely familiar with the onContentBeforeSave and the onContentAfterSave events. The first event is triggered just before someone saves any Joomla content item, and the second event is triggered (you’ve guessed it) just after someone saves a Joomla content item. The onContentBeforeSave event is typically used […]
We love optimization work, there’s always something new to discover, and there’s always something new to learn. Our love for optimization led us to discover a gem, a little optimization gem that literally halved the load of a server powering an extremely large and high traffic Joomla website. As usual, we are always thrilled to […]
A client of ours wanted to integrate webinar purchasing on her Joomla website. She had a GetResponse account where she creates webinars, and she wanted to give her clients the ability to purchase her GetResponse webinars through her website. Unfortunately, GetResponse does not technically allow either directly or indirectly the purchase of webinars. So, in […]
Most administrators check the cron jobs that they have on their server by just logging into their cPanel and clicking on the Cron Jobs link under the Advanced section. The more advanced administrators check their cron jobs by typing the following command in the shell: crontab -e So, in the absolute majority of cases, an […]
A regular client of ours came to us yesterday evening with an interesting task: she wanted to set the Last-Modified HTTP header on an article page to the actual modified date of an article. We thought it was an easy task, until we started working on it. You see, by default, Joomla sets the Last-Modified […]
Note: The solution in this post is a modification to a core file. Proceed at your own risk, and keep in mind that a Joomla update may wipe out your changes. We got a request from a client of ours to display articles from multiple categories on an existing category blog page. As a Joomla […]
Note: The second solution presented in this post consists of a core modification, which means that a future update can overwrite your changes. Always document your core modifications so that you can re-apply them after an update. During the past weekend, we updated the website of one of our clients to Joomla 3.7.5 from Joomla […]
Unlike WordPress, Joomla has the unique ability that allows an administrator to label an article as a featured article, which means that the article will display on a page where the menu item is of type Featured Articles (typically, this page is the homepage). You might think, well, that’s not so special, but there is […]
A few days ago, a client of ours emailed us and told us that some of the pages on her company website were displaying content that was not theirs. The content was not technically malicious, but it consisted of ads, which had nothing to do with the client’s business. Clearly, the website was hacked. Since […]
One of the nice features in Joomla is that you can update the CMS from either the backend or from the filesystem. We typically update our clients’ websites from the backend, but, when we encounter the minor of issues, we update it using the filesystem. Here’s how: We ssh to the server as root and […]