## Is the LiteSpeed Cache Extension for Joomla! free?¶

Yes, LSCJoomla will always be free and open source. That said, a LiteSpeed server is required, and there are fees associated with some LiteSpeed server editions.

## What server software is required for this plugin?¶

A LiteSpeed server is required in order to use this plugin. You will need one of the following:

• LiteSpeed Web Server Enterprise with LSCache Module (v5.0.10+)
• OpenLiteSpeed (v1.4.17+)

Any single server or cluster including a LiteSpeed server will work.

## What is the difference between the LSCache Module for LSWS (requires a license) and the LSCache Extension for Joomla! (free)?¶

The LSCache Module is built into your licensed copy of LiteSpeed Web Server. When it comes to caching dynamic content, the LSCache Module does all of the work.

The LSCache Extension for Joomla! is simply an interface. It allows Joomla! to instruct the server Module on what to cache, how long to cache it, and when to purge. And it allows the site owner to manage and configure the Module. Without the Module, the Plugin could not function.

A licensed LSCache Module is required in order to use the free LSCache Extension.

## Does this plugin work in a clustered environment?¶

The cache entries are stored at the LiteSpeed server level. The simplest solution is to use LiteSpeed WebADC, as the cache entries will be stored at that level.

If using another load balancer, the cache entries will only be stored at the backend nodes, not at the load balancer.

The purges will also not be synchronized across the nodes, so this is not recommended.

Note

The rewrite rules created by this plugin must be copied to the Load Balancer.

## Does LiteSpeed Cache for Joomla work with OpenLiteSpeed?¶

Yes it can work well with OpenLiteSpeed, although some features (such as ESI) may not be supported. Any setting changes that require modifying the .htaccess file will require a server restart.

## Does LiteSpeed Cache for Joomla have a crawler?¶

Yes. A crawler may be initiated on demand with the press of a button, or configured to run for a brief period of time when a purge has been triggered. Visitors are far less likely to encounter uncached content on a well-crawled site. Pages load fast and deliver a positive user experience.

## How can I install LiteSpeed Cache for Joomla?¶

LiteSpeed Cache for Joomla works right out of the box with default settings that are appropriate for most sites. Please refer to installation instructions.

Last update: July 14, 2020