Horizon Queue Management

Laravel Horizon

// Install: composer require laravel/horizon
// Publish: php artisan horizon:install

// config/horizon.php
return [
    "environments" => [
        "production" => [
            "supervisor-1" => [
                "connection" => "redis",
                "queue" => ["high", "default", "low"],
                "balance" => "auto",
                "minProcesses" => 1,
                "maxProcesses" => 10,
                "tries" => 3,
            ],
        ],
        "local" => [
            "supervisor-1" => [
                "connection" => "redis",
                "queue" => ["default"],
                "balance" => "simple",
                "minProcesses" => 1,
                "maxProcesses" => 3,
            ],
        ],
    ],
];

Balancing Strategies

// Auto balancing - redistributes workers based on queue load
"balance" => "auto",
// Simple balancing
"balance" => "simple",
// False (each supervisor runs all queues equally)
"balance" => false,

Horizon Dashboard Authorization

// In AppServiceProvider
Gate::define("viewHorizon", function (User $user) {
    return $user->is_admin;
});

Running Horizon

// Start: php artisan horizon
// Pause: php artisan horizon:pause
// Continue: php artisan horizon:continue
// Snapshot: php artisan horizon:snapshot
// Status: php artisan horizon:status