# How To Install Redis on Ubuntu 22.04
## Redis:
Redis (**RE**mote **DI**ctionary **S**erver) is an open source, in-memory, NoSQL key/value store that is used primarily as an application cache or quick-response database.
Getting started with Redis
**1. System Update**
```
sudo apt update
sudo apt upgrade -y
```
***
**2. Add Redis Official APT Repository**
Install required packages:
```
sudo apt-get install lsb-release curl gpg -y
```
Import Redis GPG key:
```
curl -fsSL https://packages.redis.io/gpg | sudo gpg --dearmor -o /usr/share/keyrings/redis-archive-keyring.gpg
```
Set correct permissions:
```
sudo chmod 644 /usr/share/keyrings/redis-archive-keyring.gpg
```
Add Redis repository to APT sources:
```
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
```
Update APT cache:
```
sudo apt-get update
```
***
**2. Add Redis Official APT Repository**
```
sudo apt-get install redis -y
```
***
**4. Enable Redis Service**
```
sudo systemctl enable redis-server
sudo systemctl start redis-server
sudo systemctl status redis-server
```
***
**5. Test Redis Service**
```
redis-cli
ping
```
**Expected output:**
```
PONG
```
Exit:
```
exit
```
***
**6. Configure Redis for systemd & Security**
Open configuration file:
```
sudo nano /etc/redis/redis.conf
```
**6.1 Enable systemd supervision**
Search or manually add:
```
supervised systemd
```
**6.1 Enable systemd supervision**
Find:
```
# requirepass foobared
```
Uncomment and modify:
```
requirepass #set your db password
```
**6.3 (Optional) Enable Remote Access**
Only if required for external applications:
```
bind 0.0.0.0
```
Save and exit (`CTRL+O`, Enter, `CTRL+X`)
Restart Redis:
```
sudo systemctl restart redis-server
```
***
**6.3 (Optional) Enable Remote Access**
```
redis-cli
AUTH
ping
```
Output:
```
PONG
```