Double-click the "Search Plugins" field and type "redis object cache"

Navigate to your wordpress installation directory.

<?php
/**
 * The base configuration for WordPress
 *
 * The wp-config.php creation script uses this file during the installation.
 * You don't have to use the web site, you can copy this file to "wp-config.php"
 * and fill in the values.
 *
 * This file contains the following configurations:
 *
 * * Database settings
 * * Secret keys
 * * Database table prefix
 * * ABSPATH
 *
 * @link https://wordpress.org/documentation/article/editing-wp-config-php/
 *
 * @package WordPress
 */
// ** Database settings - You can get this info from your web host ** //
/** The name of the database for WordPress */
define( 'DB_NAME', 'cruxhttpnoc_wpi6_' );
/** Database username */
define( 'DB_USER', 'cruxhttpnoc_wpi6_' );
/** Database password */
define( 'DB_PASSWORD', '.6o1w31pS(' );
/** Database hostname */
define( 'DB_HOST', 'localhost' );
/** Database charset to use in creating database tables. */
define( 'DB_CHARSET', 'utf8mb4' );
/** The database collate type. Don't change this if in doubt. */
define( 'DB_COLLATE', '' );
/**#@+
 * Authentication unique keys and salts.
 *
 * Change these to different unique phrases! You can generate these using
 * the {@link https://api.wordpress.org/secret-key/1.1/salt/ WordPress.org 
     secret-key service}.
 *
 * You can change these at any point in time to invalidate all existing cookies.
 * This will force all users to have to log in again.
 *
 * @since 2.6.0
 */
define( 'AUTH_KEY',         
    '2nbmnvnuawiwb7kn8bm6g39e95xozovmfe6i0kqe5telut1icgotnpmx3jrimafd' );
define( 'SECURE_AUTH_KEY',  
    'k06wwxewybfguikyp6f2f5xi9t0rj8x7epgqa5wseqxzne7dg4vipddhg1ixeda9' );
define( 'LOGGED_IN_KEY',    
    'ysj9pc0rbndvukcgazpi74trybmehpqe7d90xf0ohiipjxtdpzf9wfwvjmnsu9qg' );
define( 'NONCE_KEY',        
    'idgmjuivmnw7emwejnzmu5vl88vngnmftxeiafu206otenk5cmbr9nkcouzkdj4v' );
define( 'AUTH_SALT',        
    '9tonvsrzvqtreyx4oxh5divdnrnhuy15m3abkephgr6oyiy0oeogjsbjpin9pbss' );
define( 'SECURE_AUTH_SALT', 
    'hva50fk4svcdkbkx6a5xr6fusnequl1lkogt48jqlmnmgd8iqp2vzlx5vokjgun1' );
define( 'LOGGED_IN_

Paste following right after &lt;?php line.\
\
define( 'WP_REDIS_PATH', '' );\
define('WP_REDIS_PASSWORD','');

// change the prefix and database for each site to avoid cache data collisions\
define( 'WP_REDIS_PREFIX', 'my_first_site' );\
define( 'WP_REDIS_DATABASE', 0 ); // 0-15\
// reasonable connection and read+write timeouts\
define( 'WP_REDIS_TIMEOUT', 1 );\
define( 'WP_REDIS_READ_TIMEOUT', 1 );\
define( 'WP_REDIS_SCHEME', 'unix' );

Select and copy Redis Socket address. Eg: "/home/cruxhttpnoc/redis.sock" in this demo

Paste the socket path in WP_REDIS_PATH Consttant in empty quotes

<?php
define( 'WP_REDIS_PATH', '' );
define('WP_REDIS_PASSWORD','');
// change the prefix and database for each site to avoid cache data collisions
define( 'WP_REDIS_PREFIX', '' );
define( 'WP_REDIS_DATABASE', 0 ); // 0-15
// reasonable connection and read+write timeouts
define( 'WP_REDIS_TIMEOUT', 1 );
define( 'WP_REDIS_READ_TIMEOUT', 1 );
define( 'WP_REDIS_SCHEME', 'unix' );
/**
 * The base configuration for WordPress
 *
 * The wp-config.php creation script uses this file during the installation.
 * You don't have to use the web site, you can copy this file to "wp-config.php"
 * and fill in the values.
 *
 * This file contains the following configurations:
 *
 * * Database settings
 * * Secret keys
 * * Database table prefix
 * * ABSPATH
 *
 * @link https://wordpress.org/documentation/article/editing-wp-config-php/
 *
 * @package WordPress
 */
// ** Database settings - You can get this info from your web host ** //
/** The name of the database for WordPress */
define( 'DB_NAME', 'cruxhttpnoc_wpi6_' );
/** Database username */
define( 'DB_USER', 'cruxhttpnoc_wpi6_' );
/** Database password */
define( 'DB_PASSWORD', '.6o1w31pS(' );
/** Database hostname */
define( 'DB_HOST', 'localhost' );
/** Database charset to use in creating database tables. */
define( 'DB_CHARSET', 'utf8mb4' );
/** The database collate type. Don't change this if in doubt. */
define( 'DB_COLLATE', '' );
/**#@+
 * Authentication unique keys and salts.
 *
 * Change these to different unique phrases! You can generate these using
 * the {@link https://api.wordpress.org/secret-key/1.1/salt/ WordPress.org 
     secret-key service}.
 *
 * You can change these at any point in time to invalidate all existing cookies.
 * This will force all users to have to log in again.
 *
 * @since 2.6.0
 */
define( 'AUTH_KEY',         
    '2nbmnvnuawiwb7kn8bm6g39e95xozovmfe6i0kqe5telut1icgotnpmx3jrimafd' );

Paste password in WP_REDIS_PASSWORD constant.

<?php
define( 'WP_REDIS_PATH', '/home/cruxhttpnoc/redis.sock' );
define('WP_REDIS_PASSWORD','');
// change the prefix and database for each site to avoid cache data collisions
define( 'WP_REDIS_PREFIX', '' );
define( 'WP_REDIS_DATABASE', 0 ); // 0-15
// reasonable connection and read+write timeouts
define( 'WP_REDIS_TIMEOUT', 1 );
define( 'WP_REDIS_READ_TIMEOUT', 1 );
define( 'WP_REDIS_SCHEME', 'unix' );
/**
 * The base configuration for WordPress
 *
 * The wp-config.php creation script uses this file during the installation.
 * You don't have to use the web site, you can copy this file to "wp-config.php"
 * and fill in the values.
 *
 * This file contains the following configurations:
 *
 * * Database settings
 * * Secret keys
 * * Database table prefix
 * * ABSPATH
 *
 * @link https://wordpress.org/documentation/article/editing-wp-config-php/
 *
 * @package WordPress
 */
// ** Database settings - You can get this info from your web host ** //
/** The name of the database for WordPress */
define( 'DB_NAME', 'cruxhttpnoc_wpi6_' );
/** Database username */
define( 'DB_USER', 'cruxhttpnoc_wpi6_' );
/** Database password */
define( 'DB_PASSWORD', '.6o1w31pS(' );
/** Database hostname */
define( 'DB_HOST', 'localhost' );
/** Database charset to use in creating database tables. */
define( 'DB_CHARSET', 'utf8mb4' );
/** The database collate type. Don't change this if in doubt. */
define( 'DB_COLLATE', '' );
/**#@+
 * Authentication unique keys and salts.
 *
 * Change these to different unique phrases! You can generate these using
 * the {@link https://api.wordpress.org/secret-key/1.1/salt/ WordPress.org 
     secret-key service}.
 *
 * You can change these at any point in time to invalidate all existing cookies.
 * This will force all users to have to log in again.
 *
 * @since 2.6.0
 */
define( 'AUTH_KEY',         
    '2nbmnvnuawiwb7kn8bm6g39e95xozovmfe6i0kqe5telut1icgotnpmx3jrimafd' );

Keep prefix and database unique for each site

<?php
define( 'WP_REDIS_PATH', '/home/cruxhttpnoc/redis.sock' );
define('WP_REDIS_PASSWORD','0;GF%[TwmQS;');
// change the prefix and database for each site to avoid cache data collisions
define( 'WP_REDIS_PREFIX', 'my_first_site' );
define( 'WP_REDIS_DATABASE', 0 ); // 0-15
// reasonable connection and read+write timeouts
define( 'WP_REDIS_TIMEOUT', 1 );
define( 'WP_REDIS_READ_TIMEOUT', 1 );
define( 'WP_REDIS_SCHEME', 'unix' );
/**
 * The base configuration for WordPress
 *
 * The wp-config.php creation script uses this file during the installation.
 * You don't have to use the web site, you can copy this file to "wp-config.php"
 * and fill in the values.
 *
 * This file contains the following configurations:
 *
 * * Database settings
 * * Secret keys
 * * Database table prefix
 * * ABSPATH
 *
 * @link https://wordpress.org/documentation/article/editing-wp-config-php/
 *
 * @package WordPress
 */
// ** Database settings - You can get this info from your web host ** //
/** The name of the database for WordPress */
define( 'DB_NAME', 'cruxhttpnoc_wpi6_' );
/** Database username */
define( 'DB_USER', 'cruxhttpnoc_wpi6_' );
/** Database password */
define( 'DB_PASSWORD', '.6o1w31pS(' );
/** Database hostname */
define( 'DB_HOST', 'localhost' );
/** Database charset to use in creating database tables. */
define( 'DB_CHARSET', 'utf8mb4' );
/** The database collate type. Don't change this if in doubt. */
define( 'DB_COLLATE', '' );
/**#@+
 * Authentication unique keys and salts.
 *
 * Change these to different unique phrases! You can generate these using
 * the {@link https://api.wordpress.org/secret-key/1.1/salt/ WordPress.org 
     secret-key service}.
 *
 * You can change these at any point in time to invalidate all existing cookies.
 * This will force all users to have to log in again.
 *
 * @since 2.6.0
 */
define( 'AUTH_KEY',         
    '2nbmnvnuawiwb7kn8bm6g39e95xozovmfe6i0kqe5telut1icgotnpmx3jrimafd' );

Refresh your Redis Object Cache plugin page in wordpress. and verify if it is reachable.

Make Sure that Status is "Connected". Your wordpress is now using redis as object cache.

This guide provides step-by-step instructions on how to enable Redis object cache for a WordPress website. Redis object cache can improve the performance and speed of your website. By following these steps, you can easily configure and activate the Redis object cache plugin, ensuring that your WordPress site is using Redis as its object cache.

How to Enable Redis Object Cache for WordPress Website