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Working with redis inside laravel

Redis

For some time now I have been wanting to learn about laravel and redis. I have never used redis, so I really don't know much about it.

Redis is quite handy as it can keep data in the local server memory. By eliminating the need to access disks, in-memory key-value stores such as redis avoid seek time delays and can access data in microseconds.

How to Install Redis on CentOS 7 Redis package is not included in the default CentOS repositories. We will be installing Redis version 5.0.2 from the Remi repository.

The installation is pretty straightforward, just follow the steps below:

Start by enabling the Remi repository by running the following commands in your SSH terminal:

sudo yum install epel-release yum-utils
sudo yum install http://rpms.remirepo.net/enterprise/remi-release-7.rpm
sudo yum-config-manager --enable remi

Install the Redis package by typing:

sudo yum install redis

Once the installation is completed, start the Redis service and enable it to start automatically on boot with:

sudo systemctl start redis
sudo systemctl enable redis

To check the status of the service enter the following command:

sudo systemctl status redis

You should see something like the following:

● redis.service - Redis persistent key-value database
Loaded: loaded (/usr/lib/systemd/system/redis.service; enabled; vendor preset: disabled)
Drop-In: /etc/systemd/system/redis.service.d
        └─limit.conf
Active: active (running) since Sat 2018-11-24 15:21:55 PST; 40s ago
Main PID: 2157 (redis-server)
CGroup: /system.slice/redis.service
        └─2157 /usr/bin/redis-server 127.0.0.1:6379

Install redis php extension

To install the redis php extensions for linux we'll do the following.

cd /usr/src/

Here we download the package

wget https://github.com/phpredis/phpredis/archive/5.2.2.zip -O phpredis.zip

After this we install the package

yum -y install install php-redis

Now redis has been installed in our server.

How to use redis in our laravel application

Next we'll start using it within our laravel application.

To store a string in redis we can do the following in one of our laravel classes.

Cache::put('key', 'value', 0);

To Get a string from redis.

$value = Cache::get('key');

To forget a redis string.

Cache::forget('key');

This is how you can use redis withing laravel.