Redis has many useful commands, which can be used directly from a connection object. After configuring the component in your application (as shown in installation), you can get a reference to it like this:
$redis = Yii::$app->redis;
Run arbitrary commands using the executeCommand method:
$result = $redis->executeCommand('hmset', ['test_collection', 'key1', 'val1', 'key2', 'val2']);
There are shortcuts available for many common commands. Instead of the above, you can explicitly call the hmset() method:
$result = $redis->hmset('test_collection', 'key1', 'val1', 'key2', 'val2');
For a list of commands and their parameters available in your version of Redis, see https://redis.io/commands.
You may need to use the raw executeCommand() method for commands added after the minimum required version (2.6.12).