How To Install Redis on Ubuntu 20.04 LTS

Install Redis on Ubuntu 20.04 LTS

In this tutorial, we will show you how to install Redis on Ubuntu 20.04 LTS. For those of you who didn’t know, Redis is an open-source in-memory key-value data store. It can be used as a database, cache and, message broker, and supports various data structures such as Strings, Hashes, Lists, Sets, and more. Redis provides high availability via Redis Sentinel and automatic partitioning across multiple Redis nodes with Redis Cluster.

This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you through the step by step installation of Redis on an Ubuntu 20.04 Focal Fossa.

Install Redis on Ubuntu 20.04 LTS Focal Fossa

Step 1. First, make sure that all your system packages are up-to-date by running these following apt commands in the terminal.

sudo apt update
sudo apt upgrade

Step 2. Installing Redis on Ubuntu 20.04.

Redis version 5.0.x is included in the default Ubuntu 20.04 repositories. To install it run the following command:

sudo apt install redis-server

Once the installation is completed, the Redis service will start automatically. To check the status of the service enter the following command:

sudo systemctl status redis-server

Step 3. Configure Redis.

Next, open up the Redis configuration file with your preferred text editor:

sudo nano /etc/redis/redis.conf

Update the following values in the Redis configuration file according to your requirement. You can increase max memory limit as per available on your server:

maxmemory 256mb
maxmemory-policy allkeys-lru

After completing any changes, restart the service once:

sudo systemctl restart redis-server

We will now test the Redis instance with some commands:

$ redis-cli
127.0.0.1:6379> ping
PONG
127.0.0.1:6379> set test "Redis Working!"
OK
127.0.0.1:6379> get test
"Redis Working!"
127.0.0.1:6379> exit

Congratulations! You have successfully installed Redis. Thanks for using this tutorial for installing Redis in Ubuntu 20.04 LTS Focal Fossa system. For additional help or useful information, we recommend you to check the official Redis website.

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