Per-cluster Redis Config For Laravel

database.php

<?php

return [
  
  // ...

  'redis' => [
    'options' => [
      // Options can be specified here (with the lowest precedence).
    ],
    'clusters' => [
      'options' => [
        // Or here.
      ],
      'default' => [
        'options' => [
          // Or here (with the highest precedence).
          // Note we added an associative `'options'` key to this array which was previously just a
          // non-associative array of nodes and their connection parameters.
        ],
        [
          'scheme'   => env('REDIS_SCHEME', 'tcp'),
          'host'   => env('REDIS_HOST', '127.0.0.1'),
          // ...
        ]
      ],
    ],
  ]
]

This is at least relevant to Laravel 5.5.