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Caching in Joomla means storing rendered HTML, component views, and module output so the next guest request skips most database and PHP work. In Joomla 4, 5, and 6 you control three layers: Global Configuration System Cache (Off, Conservative, or Progressive), the System – Page Cache plugin for whole guest pages, and per-module Advanced caching. Handlers decide where copies live (File, APCu, Redis, or Memcached).

Official docs explain the switches. Deep technical posts explain com_cache internals. LiteSpeed magazine pieces cover one host stack. This guide is the operator map: which mode to pick by site type, what breaks Progressive and Page Cache, Redis and Memcached setup gotchas, how to clear and purge safely, and when caching alone cannot fix a slow EOL site. Infyways upgrades and tunes production Joomla from $149 with a free audit within 12 hours.

What you will learn

• The three cache layers and the order they win
• Conservative vs Progressive vs Page Cache with a decision table
• File, APCu, Redis, and Memcached: when each handler is right
• Exclusions for carts, forms, login, and personalised modules
• Clear vs purge, CLI clean, and stale-content fixes
• How LiteSpeed (or another edge cache) should sit beside Joomla cache
• A staging checklist and when to call Infyways

How Joomla caching is layered

Think of three increasing levels of aggressiveness. The first layer that can answer usually wins.

Primary sources: Joomla Cache user guide, caching views and modules (manual), and the LiteSpeed Cache and Redis magazine article.

Important: turning System Cache to Conservative does not by itself cache the full page. Full-page guest caching needs the System – Page Cache plugin enabled separately.

Conservative vs Progressive vs Off

Myth to kill: Progressive is not “caching for logged-in users.” Official docs are explicit that core view cachability rules do not flip that way. Progressive is more aggressive module caching for guests.

Classic Progressive failure: the wrong module appears on the wrong page because one cached module blob was reused across Itemids. If you see that, switch back to Conservative immediately.

System – Page Cache plugin

This is the fastest built-in path. On a hit, Joomla can return stored HTML before most of the site boots. It only serves guests. Logged-in visitors always get a fresh build so names, carts, and private menus stay private.

• Enable: System → Manage → Plugins → System – Page Cache
• It uses the same handler and Cache Time as Global Configuration
• Exclude menu items and URL patterns for anything dynamic
• Use Browser Caching sends browser cache headers. Leave it off unless you understand that visitors can keep a page after you clear server cache

Always exclude (or never page-cache): contact and other forms, search results, login and registration, carts and checkout, tokenised or one-time pages, and any URL that must reflect the current session. Editing an article does not always clear every page that embeds it. Clear the page cache group after content launches that must be instant.

Cache handlers: File, APCu, Redis, Memcached

Modern Joomla no longer relies on old handlers such as XCache or eAccelerator. If a host guide still lists them, ignore that part.

Redis tip from real support threads: if you disable System Cache while Redis is already unreachable, you can still get connection errors until you switch the handler back to File (or a working Redis), save, then turn caching off. Flush cache after handler changes.

Global Configuration fields that matter

Module Cache Time is in seconds. Global Cache Time is in minutes. Mixing those units is a common misconfiguration.

Per-module caching

• Open the module → Advanced → Caching: Use global or No caching
• Set No caching for login status, live counters, random quotes, carts, and anything personal
• Under Progressive for guests, No caching is ignored. That is why Progressive breaks dynamic chrome
• Some modules declare a cache mode in code (static, itemid, and similar). A badly coded static mode can freeze wrong content even on Conservative

Breadcrumbs is a safe module to use when testing Conservative caching on staging.

Decision guide by site type

LiteSpeed, CDN, and Redis together

Edge page cache (LiteSpeed Cache for Joomla, Cloudflare, or a reverse proxy) sits in front of Joomla. Redis or Memcached as the Joomla cache handler speeds object and view cache behind that. Do not stack three aggressive full-page systems without a purge story.

• Prefer Conservative when an external full-page cache is already on
• Let the edge plugin purge on article save when it supports automatic purge
• Use Redis for shared or high-traffic object cache, not as a substitute for excluding dynamic URLs
• ESI and logged-in edge features vary by LiteSpeed edition. Test on staging

Clear Cache vs Clear Expired Cache

With the File handler you can also empty cache/ via SFTP if the admin is down. That is equivalent to a full clear. Joomla cache is not a database table.

Step 1: Set a safe baseline on staging

1. Clone production to staging.
2. System → Global Configuration → System → Cache Settings: System Cache = ON – Conservative caching, Handler = File, Platform Specific Caching = No, Cache Time = 15.
3. Save. Browse as a guest. Confirm pages load and dynamic modules still update.
4. Only then introduce Redis or Progressive on a second staging pass.

Step 2: Enable Page Cache with exclusions

1. Enable System – Page Cache.
2. Exclude contact, search, login, cart, checkout, and account menu items.
3. Leave Use Browser Caching off for the first week.
4. As a guest, load a public article twice. Confirm a cache/page entry appears when using the File handler.
5. Edit that article, clear the page group, and confirm the front end updates.

Step 3: Tune modules and handlers

1. Set personal or random modules to No caching (Conservative only).
2. If the host offers Redis, set handler to Redis, enter socket or host, port 0 for Unix sockets when required, save, then Clear Cache.
3. Retest guest and logged-in paths, forms, and checkout.
4. Optional: try Progressive only on a static brochure clone. Revert at the first wrong-module symptom.

Step 4: Production cutover and monitoring

• Apply the proven staging settings during a low-traffic window
• Clear Cache after deploy
• Watch Core Web Vitals and server CPU for a week
• Schedule Clear Expired Cache or CLI purge if you stay on File
• Document exclusions so the next editor does not enable Page Cache on checkout

Troubleshooting stale or broken cache

Related reading: Joomla upgrade issues and fix Joomla update errors when cache problems appear after a version hop.

When caching is not enough

Cache multiplies a healthy stack. It does not replace an unsupported Joomla 3 site, an abandoned template full of blocking scripts, or PHP that the host is about to retire. If Time to First Byte stays poor after Conservative + Page Cache on staging, fix the CMS and template path first.

Infyways runs that path as a service:

• Free compatibility and performance audit within 12 hours
• Fixed packages from $149 small / $299 medium / custom for stores and clusters
• 100+ JED extensions in-house when a cache-hostile extension needs a rebuild
• Staging-first cutover and 30 days of post-launch support on defects we introduce

Start: Joomla Upgrade Services.

What thinner articles leave out

Key takeaways

1. Start with Conservative caching. Add System – Page Cache for guests with strict exclusions.
2. Progressive is optional and dangerous for dynamic modules. It is not “logged-in caching.”
3. Full-page cache is a separate plugin. Global System Cache alone is not full-page cache.
4. File is fine for most sites. Redis or Memcached help clusters and high traffic.
5. Global Cache Time is minutes. Module Cache Time is seconds.
6. Clear the page group after launches that must be instant. Purge expired on File hosts.
7. Edge cache plus Joomla Conservative plus Redis is a common modern stack. Test purge behaviour.
8. If the site is EOL or template-bound, upgrade first. Cache cannot patch an unsupported core.

Frequently asked questions

What is caching in Joomla?

It is storing views, modules, or whole guest pages so repeat requests skip most PHP and database work. You control it with System Cache, module Advanced settings, and the System – Page Cache plugin.

Should I use Conservative or Progressive caching?

Use Conservative for almost every site. Use Progressive only on static brochure sites after staging tests, because guest modules are force-cached and “No caching” is ignored.

Does System Cache cache the whole page?

No. Conservative or Progressive cache views and modules. Whole-page guest caching needs the System – Page Cache plugin.

Does Page Cache work for logged-in users?

No. The plugin serves guests only so personalised HTML is never shared between users.

Is Progressive caching for logged-in users?

No. That is a common myth. Progressive changes how guest modules are cached. Core view rules for logged-in users stay separate.

What cache handler should I choose?

File for standard shared hosting. APCu for a fast single server. Redis or Memcached when you need shared memory cache across nodes or your host recommends it with LiteSpeed.

Why is my cart empty after enabling cache?

Page Cache is almost certainly covering cart or checkout URLs. Exclude those menu items and clear the page cache group.

How do I clear Joomla cache from the command line?

Run php cli/joomla.php cache:clean from the site root. Use the expired variant for purge-only cleanup in cron.

Will caching fix a slow Joomla 3 site by itself?

No. It can help guests, but unsupported core, old PHP, and abandoned templates still need an upgrade path. See benefits of Joomla migration.

How much does Infyways charge to tune or upgrade a slow Joomla site?

Packages start at $149 for small sites and $299 for medium sites. Stores and multi-node setups are custom after the free audit.

Where do we start?

Request a Joomla upgrade audit or contact Infyways.

Joomla is a popular content management system that offers a wide range of features for website owners. One of the essential features is the ability to redirect users to specific pages after they have logged in. This functionality is particularly useful when you have different types of users who need to be redirected to different pages after logging in. In this guide, we will show you how to set up Joomla login redirects for different users.

Step 1: Create User Groups

The first step is to create user groups for each type of user who will have a different login redirect. To create user groups, navigate to the “Users” menu and select “Groups.” From there, click on “New” to create a new group. Give the group a name that describes its purpose, such as “Members” or “Administrators.”

Step 2: Assign Users to Groups

Next, assign each user to the appropriate user group. To do this, go to the “Users” menu and select “User Manager.” From there, select the user you want to assign to a group and click on “Edit.” In the user profile, select the appropriate user group from the “User Groups” drop-down menu.

Step 3: Create Menu Items

The next step is to create menu items that will be used as login redirects for each user group. To create a menu item, go to the “Menus” menu and select “Main Menu.” From there, click on “New” to create a new menu item. In the “Menu Item Type” section, select “Login Form.”

Step 4: Set Login Redirects

Now, you need to set the login redirect for each user group. To do this, go to the “Users” menu and select “Login Form.” From there, select the user group you want to set a redirect for and click on “Options.” In the “Login Redirection Page” field, select the menu item you created in Step 3.

Step 5: Test the Login Redirects

Finally, you should test the login redirects to ensure that they are working correctly. Log out of the Joomla backend and then log in as a user in each user group to verify that the correct redirect page is displayed after login.

In conclusion, setting up Joomla login redirects for different users is a straightforward process that can help you provide a better user experience on your website. By following the steps outlined in this guide, you can create user groups, assign users to those groups, and set up login redirects that are tailored to the needs of each group.

Joomla is a popular open-source content management system used for creating and managing websites. However, like any other CMS, Joomla has its hosting-related problems. In this blog post, we will discuss some of the common Joomla hosting problems and how to overcome them.

Slow website speed

A slow website can have a negative impact on user experience and SEO. Slow website speed can be caused by various factors, including poor server performance, large image sizes, and too many extensions installed on the website.

To overcome this problem, you can optimize your website’s images, reduce the number of extensions installed, and choose a hosting provider with fast server performance. You can also use Joomla caching extensions like JotCache or JCH Optimize to improve your website’s speed.

Security issues

Security is a crucial aspect of website hosting. Joomla websites can be vulnerable to attacks such as hacking, malware, and spam. This can result in data loss, website downtime, and a damaged reputation.

To overcome security issues, you can use security extensions like Akeeba Admin Tools or RSFirewall to secure your website. You should also keep your Joomla version and extensions updated to avoid vulnerabilities.

Website downtime

Website downtime can occur due to server maintenance, hacking attacks, or hardware failures. Downtime can result in loss of traffic, revenue, and customer trust.

To overcome website downtime, you can choose a reliable hosting provider with good uptime guarantees. You can also use monitoring services like Pingdom or UptimeRobot to track your website’s uptime and get alerts when downtime occurs.

Backup and restore issues

Regular backups are essential for website security and data recovery. However, backup and restore issues can occur due to server limitations, incorrect configurations, or data corruption.

To overcome backup and restore issues, you can use backup extensions like Akeeba Backup or XCloner to create regular backups of your website. You should also test your backups regularly to ensure that they can be restored successfully.

Compatibility issues

Joomla websites can face compatibility issues with different server environments, PHP versions, and extensions. These issues can cause website errors, broken functionality, and security vulnerabilities.

To overcome compatibility issues, you should keep your Joomla version and extensions updated to the latest versions. You can also test your website’s compatibility with different server environments and PHP versions using tools like PHP Compatibility Checker.

In conclusion, Joomla hosting problems can be challenging to overcome, but with the right tools and strategies, you can ensure that your Joomla website runs smoothly and securely. By following the tips mentioned in this blog post, you can overcome some of the common Joomla hosting problems and improve your website’s performance and security.

Image maps are a great way to make your website more interactive by allowing visitors to click on specific areas of an image to access different pages or information. Joomla allows you to easily add image maps to your website by using HTML code. In this blog post, we’ll show you how to add an image map in Joomla step-by-step.

Step 1: Choose the Image

The first step is to choose the image that you want to use for your image map. Make sure that the image is saved in a format that Joomla can recognize, such as PNG, JPG, or GIF.

Step 2: Upload the Image

Next, you need to upload the image to your Joomla website. To do this, log in to your Joomla Administrator Panel and navigate to the “Media” tab. Click on the “Upload” button and select the image file from your computer.

Step 3: Create the Image Map

Once you have uploaded the image, you need to create the image map. To do this, you will need to use HTML code. You can use any text editor to create the code, such as Notepad or TextEdit.

The basic syntax for an image map is:

<map name="mapname">
<area shape="shape" coords="coordinates" href="link">
</map>

Replace “mapname” with the name of your image map, “shape” with the shape of the clickable area (such as “rect” for a rectangle or “circle” for a circle), “coordinates” with the coordinates of the clickable area, and “link” with the URL of the page you want the clickable area to link to.

Step 4: Insert the Image Map

Once you have created the HTML code for your image map, you need to insert it into your Joomla website. To do this, go to the page where you want to insert the image map and add the following code where you want the image map to appear:

 <img src="imageurl" usemap="#mapname">

Replace “imageurl” with the URL of the image you uploaded in Step 2 and “mapname” with the name of your image map.

Step 5: Save Changes

After you have inserted the image map code, save the changes to your Joomla website.

Step 6: Check the Results

Once you’ve saved the changes, you should check your Joomla website to ensure that the image map has been added and is functioning properly. You can test the clickable areas by clicking on them and verifying that they take you to the correct pages.

Conclusion

In conclusion, adding an image map to your Joomla website is easy with the use of HTML code. By following these simple steps, you can create an image map that allows visitors to click on specific areas of an image to access different pages or information. So, give it a try and see how you can make your website more interactive with an image map.

Joomla upgrade issues are failures that show up when you change major version (3.10 to 4, 4.4 to 5, or 5.4 to 6), not ordinary patch updates. The usual causes are an extension or template still calling removed classes, PHP or the database below the target floor, a schema step that never ran, or the two Behaviour – Backward Compatibility plugins set the wrong way round on the 5.4 to 6 hop. A blank page after the files copy is a PHP fatal. Fix the fatal. Do not click update again.

Most upgrade guides repeat “back up, run Pre-Update Check, click update.” This one is built from the Joomla 6.1.0 source and the issue tracker: which plugin must be off and which on before Joomla 6 will even offer the update, what those plugins actually restore (441 legacy class aliases, and not JRequest), the SQL that gets you back into a locked administrator, the exact schema record to repair when Maintenance → Database is empty, and where the updater writes its log. If the updater cannot download the package at all, that is a different problem: how to update Joomla and fix update errors.

What you will learn

• Which symptoms mean an extension, a template, PHP, the schema, or a compatibility plugin
• The only safe hop order: 3.10 to 4.4, then 5.4, then 6, and why 6 refuses to start from anything else
• Current PHP and database floors for Joomla 5 and 6
• The two-plugin gate for Joomla 6 (compat off, compat6 on) and the SQL to undo a lockout
• What Behaviour – Backward Compatibility 6 restores, measured from the plugin’s own class map
• Joomla 6 API removals that break extensions, with the replacement for each
• How to repair #__schemas when Maintenance → Database shows nothing to fix
• How to reinstall core files without restoring a backup
• When to stop and run the jump on staging instead of the live site

Issue map

Do not skip versions

Joomla 6 only installs from 5.4 because 5.4 is where the compat6 plugin is shipped and pre-enabled, and where the updater gained the two-plugin check (pull request 45493). Earlier 5.x releases do not have it. Joomla 3 reached end of life in August 2023. Planning notes from the project: Joomla 3 to 4 step-by-step migration and Joomla 5 to 6 planning. Our path write-up: Joomla 3 to 4, 5, and 6.

Server floors that cause upgrade issues

Use the current manual, not a 2023 table: Joomla technical requirements.

Joomla 6 also expects the PHP modules json, simplexml, dom, zlib, gd, and a database driver (mysqlnd, pdo_mysql, or pdo_pgsql). Recommended memory is at least 256M. Raise limits before the upgrade, not after a fatal: Joomla PHP.ini settings.

The Joomla 6 gate: two plugins, opposite settings

This is the part most guides get backwards. There are two plugins with almost the same name, and the updater checks both before it will offer Joomla 6 (the same check runs in php cli/joomla.php core:update):

The pre-update notice reads: “This plugin must be disabled and your site working correctly before updating.” The reasoning from the maintainers on issue #46299: if an extension still needs the Joomla 5 plugin, better that it fails on 5.4 where you can switch the plugin back on, than halfway through the 6 upgrade with a half-migrated database.

So the procedure is a test, not a checkbox:

1. On 5.4, disable Behaviour – Backward Compatibility (compat). Leave Backward Compatibility 6 enabled.
2. Click through the site and the administrator. If you get “Class JTable not found” or similar, an extension still depends on the Joomla 5 layer.
3. Re-enable compat to get the site back. If the administrator is dead, run this against the database (replace the prefix):

   UPDATE jos_extensions SET enabled = 1
   WHERE type = 'plugin' AND folder = 'behaviour' AND element = 'compat';

4. Find the extension. Search the plugins/, modules/, components/, and administrator/components/ folders for the class name in the error (for example JTable or JPlugin). A hit on JText inside the compat plugin itself is not your culprit.
5. Update, replace, or remove that extension. Disable compat again. When the site is clean with it off, take the backup and update to 6.

If you skipped the check (issue #46616) and landed on Joomla 6 with “Class JPlugin not found” on every page, the Joomla 5 plugin is gone; you cannot bring it back. Enable the 6 plugin instead:

UPDATE jos_extensions SET enabled = 1
WHERE type = 'plugin' AND folder = 'behaviour' AND element = 'compat6';

Then open the plugin in System → Plugins and confirm Classes Aliases is Yes. Extensions that needed the Joomla 5 plugin specifically will still fail and must be updated or removed. Settings detail: Behaviour – Backward Compatibility.

What Backward Compatibility 6 actually restores

We read the plugin shipped in Joomla 6.1.0 (plugins/behaviour/compat6). It has three switches:

For contrast, Joomla 3.10.12 shipped 377 aliases in libraries/classmap.php. Joomla 4 kept them in core, Joomla 5 moved them into the compat plugin, Joomla 6 moved them into compat6, and the project intends to delete them in Joomla 7. An extension that still says JFactory::getApplication() in 2026 is living on a plugin with a published end date. JRequest is not in any of these maps; it was removed outright in Joomla 4.

Joomla 6 removals that break extensions

From the official removed and backward-incompatible list, the items that produce real fatals on client sites:

Step 1: Name the version hop

1. In the administrator, open System → System Information and note Joomla, PHP, and the database version.
2. Decide the single next hop from the table above. Do not chain 3 to 6 in one afternoon on the live site.
3. Take a restorable backup first. Method: how to backup a Joomla website.
4. Run that hop on a staging copy. Promote it only after the homepage, login, one form, and checkout (if any) work.
5. Read the known issues page for the exact target release before you start, for example Joomla 6.0.3 known issues. A documented regression is not your bug to debug.

Step 2: Capture the real error

1. Turn on Joomla debug only on staging: Global Configuration → System → Debug System, and set Error Reporting to Maximum.
2. On production, leave display_errors off. Read the host PHP log and the updater’s own log at administrator/logs/joomla_update.php (the path follows Global Configuration → System → Path to Log Folder). Its last line tells you whether the run died during download, extraction, SQL, or cleanup.
3. Copy the first fatal line: class name, file path, and line number. Later fatals are often fallout.
4. If the log names .htaccess or mod_rewrite, stop and follow Joomla 500 on mod_rewrite.

Step 3: Fix PHP and the database before retrying

If System Information shows PHP below the floor for your target, the upgrade will fail or boot into fatals. Ask the host to switch PHP, then retest extensions on that PHP version before you change Joomla. A site that runs on PHP 8.0 cannot move to Joomla 6 until PHP is 8.3 or newer.

Same for MySQL 5.7 or a very old MariaDB. Move the database into the supported range, confirm utf8mb4, then upgrade Joomla.

Step 4: Repair the schema

1. If you can still open the administrator, go to System → Maintenance → Database.
2. Select the Joomla CMS entry (and any extension that shows problems).
3. Click Update Structure.
4. Reload the site. If the error was “unknown column” or “table doesn’t exist” and it is gone, you are done with this class of issue.

If the administrator will not load, restore the backup. Do not keep launching the updater on a half-migrated schema.

Step 5: Repair #__schemas when Database shows nothing

Some migration tools and hand-built databases leave #__schemas without a row for core. Maintenance → Database then lists nothing, and the updater refuses to run because it cannot tell which SQL files have been applied (issue #38594, procedure in Fix Database Table Structure NOT Up to Date).

1. In the database, find the extension_id of the row in #__extensions where name = 'files_joomla'.
2. List administrator/components/com_admin/sql/updates/mysql/ (or postgresql/) and take the highest file name. On Joomla 6.1.0 that is 6.1.0-2026-03-13.sql. Do not copy that value onto a different version; read your own folder.
3. Insert the row, with your prefix and your values:

   INSERT INTO jos_schemas (extension_id, version_id)
   VALUES (700, '6.1.0-2026-03-13');

4. Reload System → Maintenance → Database. Joomla now shows the core entry and probably some structure problems. Click Update Structure.

Step 6: Reinstall core files without a full restore

When the log shows the update died during extraction, half the core files are new and half are old. You do not need to roll back the database for that. System → Update → Joomla → Upload & Update accepts the full installation package of the version you are already on and re-copies every core file. Download the matching Full Package from the Joomla downloads page, upload it, and let it finish. Then run Step 4 once more.

Step 7: Disable the extension that crashed

When the log names a file under /plugins/, /modules/, /components/, or /templates/ that is not Joomla core:

1. Prefer the administrator: System → Manage → Extensions, disable that extension, clear cache.
2. If you cannot log in, rename that extension folder over FTP or SFTP so Joomla stops loading it.
3. Or set enabled = 0 for that row in #__extensions. Match element and folder, not a guess.
4. Install a build made for the new major, or replace the extension. Re-enable only after that.

Pre-Update Check reads the developer’s compatibility tag. It does not execute the code. The labels mean exactly this: “Compatible” is the developer’s claim, “Update Required” means a newer build declares the target version, “Missing Compatibility Tag” and “Update Information Unavailable” mean nobody has told Joomla anything. An extension can be green and still fatal on your overrides.

Step 8: Repair the template and layout overrides

Joomla 4 replaced Bootstrap 2 and MooTools with Bootstrap 5 and Web Asset Manager. A Joomla 3 template, or a templates/YOUR_TEMPLATE/html/ override copied forward, will break layout, module chrome, or the whole page.

1. Set the site template to Cassiopeia (System → Site Templates). If the site renders, the CMS is fine and the old template is the issue.
2. Update the commercial template (Helix, T4, Gantry, and similar) to a release built for your Joomla major.
3. Diff layout overrides against the new core layouts. On the 6 hop, grep overrides for ->get(' on items, $this->db, and $app in plugin layouts (table above). Old overrides need a rewrite, not a file copy.
4. Put the real template back only after a full click-through.

Step 9: Restore SEF without taking the site down

A major upgrade often rewrites .htaccess or leaves “Use URL Rewriting” on while the server still rejects Options or RewriteRule. Symptom: homepage maybe works, every other URL is a 500 or a 404.

• Rename .htaccess to htaccess.bak so the site boots.
• Turn off Use URL Rewriting until the new file is valid.
• Rebuild from htaccess.txt using the mod_rewrite guide.
• Confirm redirects you added by hand (www, HTTPS, old menu aliases) still exist. A fresh .htaccess drops them.

Step 10: Retest, then take the next hop

• Homepage, login, one article, one contact or checkout, and the administrator, in Chrome and Firefox at least.
• System → Update → Extensions, so third-party code matches the new core.
• Language packs. An English core with a stale translation can hide menu types.
• Clear Joomla cache and any host or CDN cache.
• Keep the pre-upgrade backup until the next business day.
• Only then plan the following major, on staging again. The Joomla Next channel will start announcing 7.x the same way it announced 6.

VirtueMart, K2, and page builders

These fail more often than core articles:

• VirtueMart: install the VirtueMart build that declares your target Joomla major before you switch the core. A Joomla 3 cart on Joomla 5 will fatal in the shop, not in the updater.
• K2: treat it as a migration. Many K2 sites need a content move, not an in-place upgrade.
• Helix, SP Page Builder, Quix, Gantry: update the builder to the vendor release for that Joomla version, on staging, before the core hop.
• Anything with cli/ scripts or cron: the CMS CLI application classes are gone in 6. Those jobs need console plugins or the compat6 Include Deprecated Classes switch until the vendor ships one.

When to stop clicking Update

Hire a staged upgrade if any of these are true:

• You are still on Joomla 3 and the business cannot sit on a broken staging copy
• Pre-Update Check lists extensions you cannot replace
• Disabling the Joomla 5 compat plugin on 5.4 breaks the site and you cannot find which extension
• Two attempts already left the schema or the administrator broken
• Checkout, memberships, or a custom component is the revenue path

Infyways runs those jumps from $149, with a compatibility audit within 12 hours. Start at Joomla Upgrade Services.

What thinner articles leave out

Key takeaways

1. Upgrade issues are major-version breaks. Patch updates use the other guide.
2. Hop order is 3.10, then 4.4, then 5.4, then 6. Joomla 6 only starts from 5.4.
3. Joomla 6 needs PHP 8.3 or newer. Joomla 5 needs PHP 8.1 or newer.
4. Before the 6 hop: Behaviour – Backward Compatibility off, Backward Compatibility 6 on, and the site working with that combination on 5.4.
5. Backward Compatibility 6 restores 441 legacy class aliases and the old Filesystem and Input classes. It does not restore JRequest, and Joomla 7 will remove it.
6. Read the first fatal and joomla_update.php. Disable that extension. Then fix schema, template, and .htaccess.
7. Empty Maintenance → Database means a missing #__schemas row, not a healthy site.
8. Prove the hop on staging. Keep the backup until the live site has been quiet for a day.

Frequently asked questions

What are the most common Joomla upgrade issues?

Incompatible extensions, old templates and layout overrides, PHP or database versions below the target, an unfinished database schema, and the two Behaviour – Backward Compatibility plugins set the wrong way round on the way to Joomla 6.

Why is my site blank after a Joomla upgrade?

A PHP fatal is hiding the page. Read the host error log and administrator/logs/joomla_update.php, disable the extension or template named there, and do not run the updater again until the administrator loads.

Can I upgrade from Joomla 3 directly to Joomla 6?

No. Move 3.10 to 4.4, then to 5.4, then to 6, each hop tested on staging. Joomla 6 is only offered from 5.4.

Which compatibility plugin must be on for Joomla 6?

Behaviour – Backward Compatibility 6 must be enabled. Behaviour – Backward Compatibility (the Joomla 5 one, no number) must be disabled and the site must work without it before you update.

The site broke after I disabled Backward Compatibility on 5.4. What now?

Re-enable it (from the plugin list, or with UPDATE on #__extensions where element = ‘compat’) and search your extensions for the class named in the error. Fix or remove that extension, then disable the plugin again.

I am on Joomla 6 and every page says Class JPlugin not found. How do I recover?

Enable Backward Compatibility 6 with UPDATE on #__extensions where element = ‘compat6’, then set its Classes Aliases option to Yes. Extensions that needed the Joomla 5 plugin itself must be updated or removed.

Does the backward compatibility plugin fix every old extension?

No. In Joomla 6.1.0 it restores 441 legacy class aliases, the old CMS Filesystem and Input classes, and four asset stubs. It does not restore JRequest or anything removed in Joomla 4.

What PHP version do I need?

Joomla 5 needs PHP 8.1 or newer. Joomla 6 needs PHP 8.3.0 or newer, with 8.4 recommended. Details are in the Joomla technical requirements.

How do I fix database errors after upgrading?

Open System → Maintenance → Database and run Update Structure. If that page is empty, insert the missing #__schemas row for files_joomla with the newest SQL file name from com_admin/sql/updates. If the administrator will not load, restore the backup.

Why do extensions break when Joomla itself updated cleanly?

Core files can be new while an extension still calls classes Joomla 6 moved or removed: CMS Input, CMS Filesystem, BaseApplication, JPATH_PLATFORM, or CMSObject getters. Update or replace that extension, or disable it until a compatible build exists.

Is it safe to upgrade the live site?

Patch updates are usually safe after a backup. Major upgrades should be proven on staging first.

Who can fix a broken Joomla upgrade?

Infyways handles failed upgrades and full version jumps. Request a Joomla upgrade audit.

Are you looking to learn Joomla quickly and efficiently? Then you’ve come to the right place. Joomla is a popular content management system (CMS) that allows users to create and manage websites easily. With its user-friendly interface and powerful features, Joomla is a great choice for anyone looking to build a website. In this blog post, we’ll introduce you to some of the best Joomla books that will help you master this powerful CMS in just a few days.

Joomla 3 Explained: Your Step-by-Step Guide – by Stephen Burge

Joomla 3 Explained is a comprehensive guide to the latest version of Joomla. Written by Joomla expert Stephen Burge, this book provides a step-by-step guide to building a website with Joomla. It covers everything from installation to configuration, and from basic site building to advanced customizations. With clear explanations and practical examples, this book is perfect for beginners and experienced Joomla users alike.

Joomla! 3 Beginner’s Guide – by Eric Tiggeler

Joomla! 3 Beginner’s Guide is a practical guide to building a website with Joomla. Written by Joomla expert Eric Tiggeler, this book provides a step-by-step guide to building a website from scratch. It covers everything from installing Joomla to creating a template and adding content. With clear explanations and practical examples, this book is perfect for beginners who want to learn Joomla quickly and efficiently.

Joomla! 3 SEO and Performance – by Simon Kloostra

Joomla! 3 SEO and Performance is a comprehensive guide to optimizing Joomla websites for search engines and speed. Written by Joomla expert Simon Kloostra, this book provides a step-by-step guide to optimizing Joomla websites for SEO and performance. It covers everything from configuring Joomla for SEO to optimizing images and caching. With clear explanations and practical examples, this book is perfect for anyone who wants to get the most out of their Joomla website.

Joomla! 3 Boot Camp: 30-minute lessons to Joomla! 3 Mastery – by Robin Turner

Joomla! 3 Boot Camp is a concise guide to mastering Joomla in just 30 minutes a day. Written by Joomla expert Robin Turner, this book provides 30 short lessons that cover everything from installing Joomla to creating a template and adding modules. With clear explanations and practical examples, this book is perfect for busy professionals who want to learn Joomla quickly and efficiently.

Conclusion

In conclusion, mastering Joomla doesn’t have to be a daunting task. With the right resources, you can learn Joomla quickly and efficiently. These four Joomla books are some of the best resources available to help you master Joomla in just a few days. Whether you’re a beginner or an experienced user, these books will provide you with the knowledge and skills you need to build and manage Joomla websites with ease.

Joomla is a popular content management system used by millions of websites worldwide. Whether you’re looking to upgrade your hosting provider, move your website to a different server, or simply backup your Joomla site, transferring Joomla from one server to another can be a daunting task. In this blog post, we’ll outline the steps you need to follow to transfer Joomla from one server to another.

Step 1: Backup Your Joomla Site

Before you begin transferring your Joomla site to a new server, it’s essential to create a backup of your site. This backup will ensure that your site’s data and settings are safe and can be restored in case anything goes wrong during the transfer process.

You can backup your Joomla site using various tools, such as Akeeba Backup or the built-in Joomla backup feature. Once you’ve created a backup of your Joomla site, download the backup file to your computer or the new server.

Step 2: Set Up Your New Server

The next step is to set up your new server. This includes installing a new instance of Joomla and configuring your server settings, such as PHP and MySQL versions, file permissions, and other server requirements.

Ensure that your new server meets the minimum requirements for running Joomla, including the necessary PHP and MySQL versions, as well as any required libraries and extensions.

Step 3: Upload Your Joomla Site Files

The next step is to upload your Joomla site files to the new server. This includes all the files and folders that make up your Joomla site, such as images, CSS files, and extensions.

You can upload your Joomla site files using various methods, such as FTP, SFTP, or SSH. If you’re using FTP, make sure to set the correct file permissions for your Joomla files.

Step 4: Import Your Joomla Database

The next step is to import your Joomla database into your new server. This database contains all your site’s content, including articles, menus, and user data.

To import your Joomla database, you’ll need to create a new database on your new server and import your backup file into it. You can use tools like phpMyAdmin or command-line tools to import your database.

Step 5: Update Your Joomla Configuration File

The final step is to update your Joomla configuration file to reflect your new server settings. This includes updating your database settings, such as the database name, username, and password.

To update your Joomla configuration file, open the configuration.php file in your Joomla root directory and update the relevant settings.

Step 6: Test Your Joomla Site

Once you’ve completed all the above steps, it’s time to test your Joomla site on the new server. Make sure that everything is working correctly, including your site’s content, images, and extensions.

Conclusion

Transferring Joomla from one server to another may seem daunting at first, but by following these steps, you can ensure a smooth and hassle-free transfer process. Remember to backup your site, set up your new server, upload your site files, import your database, update your configuration file, and test your site thoroughly. With a little patience and attention to detail, you can successfully transfer your Joomla site to a new server.

Joomla, one of the most popular content management systems (CMS) in the world, has recently released its latest version, Joomla 4.x. This release brings a lot of exciting new features and improvements that will benefit website owners and developers alike. In this blog, we will discuss some of the key new features of Joomla 4.x.

New Features in Joomla 4.x

Improved User Experience

Joomla 4.x has a new user interface that has been completely revamped to make it more user-friendly and intuitive. The new interface is also fully responsive, which means that it will adapt to different screen sizes, making it easier to use on mobile devices.

Better Accessibility

Joomla 4.x has improved accessibility features, making it easier for people with disabilities to use the CMS. This includes better keyboard navigation, improved contrast, and better support for screen readers.

Enhanced Security

Joomla 4.x has several new security features, including improved two-factor authentication, stronger password hashing, and better protection against cross-site scripting (XSS) and SQL injection attacks.

Better Performance

Joomla 4.x is faster and more efficient than its predecessor, Joomla 3.x. This is due to several performance improvements, including better caching and a new routing system that makes URLs more search engine-friendly.

New Media Manager

Joomla 4.x has a new Media Manager that allows you to manage your website’s media files more efficiently. You can now easily upload, organize, and edit images and other media files directly from the Media Manager.

Improved Multilingual Support

Joomla 4.x has improved multilingual support, making it easier to create multilingual websites. You can now translate content more easily, and the new language switcher module allows users to switch between languages with ease.

Better Custom Fields

Joomla 4.x has improved Custom Fields functionality, allowing you to create more complex and customizable forms. You can now add new field types, such as color pickers and date-time pickers, and create more complex field layouts.

New Installer

Joomla 4.x has a new installer that makes it easier to install and set up a new website. The new installer is faster, more streamlined, and more user-friendly, making it easier for beginners to get started with Joomla.

Conclusion

Joomla 4.x is a significant upgrade over its predecessor, Joomla 3.x. It brings a lot of new features and improvements that will benefit website owners and developers alike. With its improved user experience, enhanced security, and better performance, Joomla 4.x is a great choice for anyone looking to build a modern, powerful, and secure website. If you are currently using Joomla 3.x, it is highly recommended that you upgrade to Joomla 4.x to take advantage of its new features and benefits.