How to install Redis memory cache with HestiaCP? Detailed steps from 0 to 1

In modern websites and applications, memory caching technology has become one of the key tools to improve performance.

Redis , as a popular in-memory data structure storage system, is widely used in scenarios such as caching, session management, and data storage.

This article will detail how to install and configure Redis memory caching on HestiaCP , including the steps for installation on Debian or Ubuntu systems, configuring the Redis service, and understanding the differences between Redis and php-redis.

1. Install Redis using the official repository

Redis is not always available in the default software repositories of Debian or Ubuntu , or it may provide an older version. To get the latest version of Redis, you need to add the official Redis repository and install it. Here are the specific steps:

1. Import the Redis official GPG key

   wget -O /usr/share/keyrings/redis-archive-keyring.gpg https://packages.redis.io/redis-archive-keyring.gpg
   

2. Add Redis official repository

   echo "deb [signed-by=/usr/share/keyrings/redis-archive-keyring.gpg] https://packages.redis.io/deb $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/redis.list
   

3. Update package lists

   sudo apt update
   

4. Install Redis and the php-redis extension

   sudo apt install redis php-redis
   

In this way, you can install the latest version of Redis from the Redis official repository.

If you are using PHP 8.2, install the Redis extension using the following command:

apt install php8.2-redis
systemctl restart php8.2-fpm

2. Check the Redis service status

After installation, you can check if the Redis service is running normally. Depending on your Linux distribution, you can use the following command:

• Systems using systemd

   systemctl status redis
  

• Systems using init.d

   /etc/init.d/redis-server status
  

• View Redis version information

   redis-cli --version
  

• Testing the Redis Server Connection

   redis-cli ping
  

  If Redis is running, you should receive PONG Response.

3. Securely configure Redis

To improve the security of Redis, the following measures are recommended:

• Add a password

  Set a password in the Redis configuration file to prevent unauthorized access.

• Restrict access

  Restrict access to the Redis service to specific IP addresses or networks.

• Using Sockets

  Use sockets instead of TCP ports for increased speed and security.

4. The difference between php-redis and Redis

When installing Redis, you may also see php-redis This extension. They differ in the following ways:

• php-redis

  php-redis It is a PHP extension that allows PHP scripts to interact with the Redis server. php-redis After that, PHP applications can take advantage of Redis's caching, session management, and queue handling capabilities.php-redis It does not contain a Redis server itself, it is just a bridge between PHP and Redis.

• Redis

  Redis is a standalone service that runs the Redis database. It runs in the background as a daemon process, providing data storage and caching services. Other applications, including php-redis Extended PHP applications can connect to the Redis server through the network to operate.

in short,php-redis It is a PHP extension used to operate Redis in PHP applications; while Redis is an independent service that provides memory data storage capabilities.

If you want to use Redis in your PHP application, you need to install both the Redis server and php-redis Extension so that PHP applications can php-redis The extension communicates with Redis.

in conclusion

Installing and configuring Redis memory cache on HestiaCP can significantly improve the performance of your websites and applications.

By following the steps in this article to add the official repository and install Redis, you will be able to get the latest version of Redis.

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Understanding php-redis The differences between Redis and REST will help you better configure and utilize the functions provided by Redis, and further improve your development and operation efficiency.