Using both mysql and redis in yii2 application - php

Question

I'm building a CRM system which should allow a different access for different users, so i need to make a complex authentication and notifications in the panel. But the main system should use the REDIS. I have installed yii2 redis plugin and have the config like this in db.php (mysql config ):
<?php
return [
'class' => 'yii\db\Connection',
'dsn' => 'mysql:host=localhost;dbname=yii2basic',
'username' => 'root',
'password' => '',
'charset' => 'utf8',
// Schema cache options (for production environment)
//'enableSchemaCache' => true,
//'schemaCacheDuration' => 60,
//'schemaCache' => 'cache',
];
And in web.php:
$db = require __DIR__ . '/db.php';
$config = [
'id' => 'basic',
'basePath' => dirname(__DIR__),
'bootstrap' => ['log'],
'aliases' => [
'#bower' => '#vendor/bower-asset',
'#npm' => '#vendor/npm-asset',
],
'components' => [
'redis' => [
'class' => 'yii\redis\Connection',
'hostname' => 'localhost',
'port' => 6379,
'database' => 0,
],
],
'db' => $db,
How can i differntiate my models, to use either mysql or redis? I assume if i specify redis in components section, the whole app uses redis db. I could use redis with multiple values for key, but since redis is dropping the keys when max memory will be reached, all registered users and their profiles will parish, so i think i should use mysql for this basci stuff ( database with roles, authentification, profiles)

Answer 1

return [
'components' => [
'db1' => [
'class' => 'yii\db\Connection',
'dsn' => 'mysql:host=localhost;dbname=db1name', //maybe other dbms such as psql,...
'username' => 'db1username',
'password' => 'db1password',
],
'db2' => [
'class' => 'yii\redis\Connection',
'dsn' => 'YOURCONFIG',
'port' => '6379',
'password' => 'db2password',
'username' => 'db2username',
],
],
];
Then try to use
// To get from db1
Yii::$app->db1->createCommand((new \yii\db\Query)->select('*')->from('tbl_name'))->queryAll()
// To get from db2
Yii::$app->db2->createCommand((new \yii\db\Query)->select('*')->from('tbl_name'))->queryAll();
For active record in your model write
// db1
public function getDb() {
return Yii::$app->db1;
}
//Or db2
public function getDb() {
return Yii::$app->db2;
}