Compile and install Redis tutorial on Ubuntu 20.04 system.

The following is a brief tutorial on compiling and installing Redis on the Ubuntu 20.04 system:

1. Update system packages:

   sudo apt update
   sudo apt upgrade
   

2. Install dependencies required for compilation:

   sudo apt install build-essential tcl
   

3. Download the Redis source code:

   wget http://download.redis.io/releases/redis-6.2.4.tar.gz
   tar xzf redis-6.2.4.tar.gz
   cd redis-6.2.4
   

4. Compile and install Redis:

   make
   sudo make install
   

5. Configure Redis:

   sudo mkdir /etc/redis
   sudo cp redis.conf /etc/redis
   

6. Modify the Redis configuration file:

   sudo nano /etc/redis/redis.conf
   

   In the file, you can make some configuration changes according to your needs, such as bind address, port, etc.

7. Create a Redis systemd service unit:

   sudo nano /etc/systemd/system/redis.service
   

   Paste the following into the file:

   [Unit]
   Description=Redis In-Memory Data Store
   After=network.target
   
   [Service]
   ExecStart=/usr/local/bin/redis-server /etc/redis/redis.conf
   ExecStop=/usr/local/bin/redis-cli shutdown
   Restart=always
   
   [Install]
   WantedBy=multi-user.target
   

8. Start the Redis service:

   sudo systemctl start redis
   

9. Verify installation:

   redis-cli ping
   

   If you get a "PONG" response, Redis is successfully installed and running.

Note that the above is a basic example of compiling and installing Redis, you may need to further configure and adjust it according to your specific needs.