Multiple database read/write connections in Laravel

This post follows up on my previous post Multiple read-only database slaves in Laravel after I got a helpful comment from Ezequiel Russo who showed me an even better way to use multiple database read/write connections in Laravel - one that works with Laravel's config caching.

It turns out that Laravel will automatically pick a database connection at random if provided with an array, so there's no need to pick a random connection yourself. This makes it really easy to define your connections and have it work with php artisan config:cache.

'mysql' => [
    'driver' => 'mysql',
    'read' => [
        'host' => ['193.168.1.1', '194.168.1.1']
    ],
    'write' => [
        'host' => '196.168.1.2'
    ],
    //
]