Linux Ubuntu 18.04 Use redis for cache pages and PHP sessions storage

apt update -y && apt install redis-server php-redis

/etc/php/7.2/fpm/pool.d/user.conf

php_admin_value[session.save_handler] = redis

php_admin_value[session.save_path] = "tcp://127.0.0.1:6379?persistent=1&weight=1&database=2"

phpinfo should display redis info on the page.

There is link https://github.com/phpredis/phpredis#php-session-handler for save_path parameters

The checking script is 

<?php

  $redisinstance = new Redis();

  $redisinstance->connect("127.0.0.1", 6379);

  $result = $redisinstance->get("test");

  if ($result) {

      echo $result;

  } else {

      echo "No matching key found. Refresh the browser to add it!";

      $redisinstance->set("test", "Successfully retrieved the data!") or die("Couldn't save anything to redis...");

  }

?>

After refreshing page

redis-cli

127.0.0.1:6379> select 0

OK

127.0.0.1:6379> keys "*"

1) "test"

127.0.0.1:6379> get "test"

"Successfully retrieved the data!"