Using Redis extensions in YII2

Redis is a very good NoSQL database, and the benefit of memcached is that it can persist data. To use Redis in Yii2, first expand Redis. Redis can be added to the Composer.json.

"Require": {        "php": ">=5.4.0",        "Yiisoft/yii2": ">=2.0.5",        "Yiisoft/yii2-bootstrap": "*",        " Yiisoft/yii2-swiftmailer ":" * ",        " Yiisoft/yii2-smarty ":" * ",        " Yiisoft/yii2-redis ":" * "    },

Then use the command composer update, or use the command composer update--prefer-dist Yii-soft/yii2-redis directly.

The next step is to configure the components.

Redis ' Redis ' = [    ' class ' = ' yii\redis\connection ',    ' hostname ' = ' 127.0.0.1 ',    ' port ' = 6379,    ' database ' = 0,//has 16 library 0-15 default, if it is a cluster, there is only one 0. ],

Finally, it can be used.

$redis = Yii:: $app->redis; $redis->set (' City ', ' Beijing '); $value = $redis->get ("City"); Echo ' The value of city In Redis is: ', $value;

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