mysql - ZF2: Master/Slave replication with joins -


i have 2 databases: db1 , db2. created slave db1, called db1-slave.

db1 contains analytics table have high write rates, low read rates (which why created master/slave relationship). have master/slave feature set , ready go.

a problem when joining other database db2 reading, error occurs saying db2 not exist. not exist @ slave layer, , not prefer set replication (to preserve bandwidth).

    $select = new select();     $select->from($this->table)             ->columns(['*', 'count' => new \zend\db\sql\expression('count(app.id)')])             ->join('app', 'analytics.app_id = app.id', array('*'), 'left')             ->join(new tableidentifier('ad', 'db2'), 'ad.id = analytics.event', array('*'))             ->group('ad.id')->order('ad.id asc');

can modify in way enable reading db1-slave, , reading db2 on joins?


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