What is artisan queue commands in Laravel?
Why Interviewers Ask This
Candidates at the intermediate level are expected to not only know this concept but explain the trade-offs involved. Interviewers use this question to see if you can reason about design decisions, not just recall facts.
Answer
Laravel provides several Artisan queue commands for managing background jobs. php artisan queue:work starts a worker that processes jobs continuously. php artisan queue:listen starts a worker that re-boots on each job (slower, catches code changes). php artisan queue:work --queue=emails,default processes specific queues in priority order. php artisan queue:work --tries=3 --timeout=60 sets retry count and timeout. php artisan queue:failed lists all failed jobs. php artisan queue:retry all retries all failed jobs. php artisan queue:retry {id} retries a specific failed job. php artisan queue:flush deletes all failed jobs. php artisan queue:forget {id} deletes a specific failed job. php artisan queue:monitor emails,default --max=100 alerts when a queue exceeds 100 jobs. In production, use Supervisor to keep workers running and restart them after code deployments: php artisan queue:restart gracefully restarts workers.
Common Mistake
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