Background jobs are the invisible engine of performant applications. Laravel's queue system lets you defer time-consuming tasks - sending emails, processing images, generating reports - so your users never wait for work that can happen asynchronously.
Why Queues Matter
Every second your API spends processing a request is a second the user waits. If a user action triggers an email notification, a webhook to a third-party service, and an analytics event, those three tasks might add two seconds to the response. Push them to a queue, and the user gets an instant response while the work happens in the background.
Queue Drivers
Laravel supports multiple queue backends. Redis is our default recommendation - it's fast, reliable, and handles high throughput. For simpler applications, the database driver works without additional infrastructure. Amazon SQS is excellent for applications already on AWS.
Creating Jobs
Laravel jobs are PHP classes with a handle method containing the work to perform. Keep jobs focused - each job should do one thing. A SendWelcomeEmail job sends the email. A ProcessProfileImage job resizes and stores the image. Don't combine unrelated work in a single job.
Reliability Patterns
Jobs can fail. Network errors, external service outages, and resource limits all cause failures. Configure automatic retries with backoff intervals. Set maximum retry counts to prevent infinite retry loops. Use the failed method to handle permanent failures - log the error, notify someone, or queue a compensation action.
Job Chaining and Batching
When multiple jobs must run in sequence, use job chains. The next job only dispatches if the previous one succeeds. For parallel processing - like generating thumbnails for fifty uploaded images - use job batching. Laravel tracks batch progress and lets you define callbacks for batch completion or failure.
Queue Priorities
Not all jobs are equal. Password reset emails are urgent. Weekly digest compilation can wait. Use multiple queues with different priorities. Run more workers on high-priority queues and fewer on low-priority ones.
Monitoring with Horizon
Laravel Horizon provides a dashboard for monitoring queue health: throughput, job completion times, failure rates, and worker status. It's invaluable for production applications. Set up alerts for queue backlogs and elevated failure rates so you catch problems before users notice.
Scaling Workers
Scale queue workers based on queue depth. During peak hours, spin up additional workers. During quiet periods, reduce to save resources. For cloud deployments, auto-scaling based on queue metrics keeps costs proportional to actual load.
Our Approach
At Masterpiece Designs, we queue everything that can be queued. Email sending, image processing, report generation, third-party API calls, webhook delivery - all handled asynchronously. This keeps our APIs responsive and our applications resilient to external service slowdowns.