How To Setting Up Redis with LiteSpeed Cache for WordPress

Redis, an open-source, in-memory data store, is a versatile tool that serves as a database, cache, message broker, or streaming engine.

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When combined with LiteSpeed Cache (LSCache), recognized as the world’s fastest full-page caching solution, it can significantly enhance website performance.

This tutorial provides step-by-step guidance for beginners on setting up Redis with LiteSpeed Cache for WordPress.

1. LiteSpeed Cache Plugin Installation

The first step in optimizing your WordPress website’s performance is installing the LiteSpeed Cache plugin.

LiteSpeed Cache, known for its efficiency, is designed to seamlessly integrate with LiteSpeed Web Server, providing robust caching capabilities.

Follow these detailed instructions to ensure a smooth installation:

Accessing the WordPress Dashboard

• Open your web browser and navigate to your WordPress login URL.
• Enter your WordPress login credentials to access the dashboard.

Installing the LiteSpeed Cache Plugin

• Once logged in, click on the “Plugins” tab located on the left-hand menu.
• Select “Add New” to access the plugin installation page.

Searching for LiteSpeed Cache Plugin

• Utilize the search box at the top of the plugins installation page.
• Enter the search term: LiteSpeed Cache.

Installing the Plugin

• Among the search results, locate the LiteSpeed Cache plugin and click on “Install Now.”
• After the installation is complete, click “Activate” to enable the plugin.

Verification

• Confirm the successful installation by checking the plugins list for LiteSpeed Cache.
• Ensure the LiteSpeed Cache menu option is now visible on the WordPress dashboard.

2. Plugin Configuration using Presets

Now that the LiteSpeed Cache plugin is installed, the next crucial step is configuring the plugin settings.

LiteSpeed Cache simplifies this process by offering presets, which are predefined configurations tailored for various scenarios.

Follow these steps to optimize your caching settings using presets:

Accessing LiteSpeed Cache Presets

• On the WordPress dashboard, locate and click on the “LiteSpeed Cache” option in the left-hand menu.

Applying the Essentials Preset

• Within the LiteSpeed Cache settings, find and click on the “Presets” tab.
• Identify the “Essentials” preset, designed to establish fundamental caching settings suitable for any website.
• Click on “Apply Preset” in the Essentials section to implement the new settings.

Confirmation

• Confirm that the LiteSpeed Cache plugin is now configured with the Essentials preset.
• The successful application of the preset ensures that basic caching settings are optimized for your website.

3. Installing Redis and the Redis PHP Extension

To further enhance your website’s performance, integrating Redis as an in-memory data store for caching is essential.

The following steps guide you through the installation of Redis and the Redis PHP extension, ensuring seamless integration with LiteSpeed Web Server:

Server Access and SSH Login

• Ensure access to your server and log in via SSH for command-line interaction.

Installing Redis

• Execute the command sudo apt install redis to install Redis on your Linux Ubuntu server.
• Confirm the installation by typing ‘Y’ and pressing ‘Enter.’

Starting Redis Server

• Initiate the Redis server with the command systemctl start redis-server.
• Enable automatic startup on boot by using systemctl enable redis-server.

Adding LiteSpeed Repository

• Copy and paste the LiteSpeed repository command from the video description into the command line.
• Update the system with sudo apt update.

Installing Redis PHP Extension

• Execute sudo apt install lsphp81-redis to install the Redis PHP extension.
• Note: Replace ’81’ with your PHP version if different.

Verification of Redis Installation

• Ensure the successful installation of Redis by running sudo redis-cli.
• Type ping in the Redis command-line interface; a response of ‘pong’ confirms proper installation.

These comprehensive steps ensure the seamless integration of Redis with LiteSpeed Cache, laying the foundation for enhanced website performance and efficient caching.

4. Configuring LSCache to Use Redis

Now that you have installed Redis and the Redis PHP extension, the next crucial step is configuring LiteSpeed Cache (LSCache) to effectively utilize Redis for object caching.

Follow these detailed instructions to ensure a seamless integration:

Accessing LiteSpeed Cache Settings

• Navigate to your WordPress dashboard.
• Locate and click on the “LiteSpeed Cache” option in the left menu.

Configuring Object Caching Settings

• Within the LiteSpeed Cache menu, select the “Object” tab.
• Confirm that the “Status” section displays Redis extension = enabled and Connection Test = failed.
• This indicates that Redis is recognized but not yet configured.

Object Cache Configuration

• Activate the Object Cache by setting it to “ON.”
• Choose “Redis” as the caching method.
• Set the “Host” to localhost to indicate that Redis is running on the same server.
• Enter the “Port” as 6379, the default port for Redis.
• Determine the “Default Object Lifetime” in seconds. This defines how long objects will be stored in the cache. You can set this value based on your specific requirements; the default is 1800 seconds.

Saving Configuration Changes

• Scroll down to the bottom of the page.
• Click on “Save Changes” to apply the configured settings.

5. Testing the Configuration

With the configuration completed, it is essential to conduct a thorough test to ensure that Redis is seamlessly integrated into LiteSpeed Cache.

Follow these steps for comprehensive testing:

Visiting Your Home Page

• Open your web browser and visit the home page of your WordPress website.
• Observe any changes in website performance and responsiveness.

6. Verifying Redis Installation

After configuring LiteSpeed Cache to use Redis, it is crucial to verify the Redis installation to guarantee its proper functioning.

Follow these steps for thorough verification:

Accessing Redis Command-Line Interface

• Connect to your server via SSH.
• Open the terminal and type sudo redis-cli to access the Redis command-line interface.

Pinging Redis Server

• Within the Redis command-line interface, type the command ping and press enter.
• Confirm that the response is pong, indicating successful communication with the Redis server.

Checking LiteSpeed PHP Info Page

• Navigate to the LiteSpeed PHP Info page at https://YOUR-SERVER-IP:7080/phpinfo.php.
• Inspect the “Redis Support” section to ensure that Redis is recognized and supported by LiteSpeed.

Examining Key-Value Pairs

• Run the command sudo redis-cli again to access the Redis command-line interface.
• Type keys * to check for any existing key-value pairs in Redis.
• Verify that the key-value store is empty or contains expected entries.

By diligently following these steps, you can be confident that LiteSpeed Cache is effectively configured to utilize Redis for object caching, and Redis is correctly installed and operational on your server.

This ensures optimal performance and responsiveness for your WordPress website.