How to Install Redis and PHP Redis on a cPanel Server

Redis is an open-source, in-memory data structure store that's commonly used as a database, cache, and message broker. Installing Redis on a cPanel server can enhance performance, especially for web applications that rely heavily on caching. This guide will walk you through installing Redis and PHP Redis (for PHP integration) on a cPanel server.

Step 1: Install Redis on Your cPanel Server

1. Access SSH
   Connect to your cPanel server via SSH. You need root privileges to install Redis.

2. Update the Package Repository
   Update your package manager to ensure you have access to the latest Redis version:

3. Install Redis
   Use the following command to install Redis on your server:

4. Enable and Start Redis
   After installation, enable and start Redis to run it automatically on system startup.

5. Check Redis Status
   Confirm that Redis is running by checking its status:

Step 2: Install PHP Redis Extension

To integrate Redis with PHP, you'll need the PHP Redis extension.

1. Install PHP Development Tools
   Before installing the PHP Redis extension, ensure PHP development tools are installed:

2. Install PHP Redis Extension
   Use PECL (PHP Extension Community Library) to install the PHP Redis extension:

3. Enable the PHP Redis Extension
   After installation, add the Redis extension to your PHP configuration:

4. Restart Apache
   Restart Apache to apply the changes:

Step 3: Verify Redis and PHP Redis Installation

1. Verify Redis Installation
   Test Redis by running the following command:

If Redis is running correctly, it should return "PONG."

2. Verify PHP Redis Extension
   Create a PHP file in your public_html directory to verify PHP Redis. Add the following code to the file:

Access this file in your web browser. Search for "Redis" on the page to confirm the PHP Redis extension is installed and active.

Step 4: Configure Redis (Optional)

For enhanced security and performance, consider configuring Redis. For example, you can set a password for Redis or adjust the memory limit by editing the Redis configuration file:

After making changes, restart Redis to apply:

Conclusion

With Redis and PHP Redis now installed, your cPanel server can efficiently handle caching and data management, significantly improving performance for PHP-based applications.

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