Create a robust task queue system that processes background jobs asynchronously, handles job retries, prioritization, and provides job status tracking.

Project Checklist

• Create queue data structure for job storage
• Implement job enqueueing with metadata
• Build worker system to process jobs
• Add job status tracking (pending, processing, completed, failed)
• Implement job retry mechanism for failed jobs
• Add priority levels for job processing

Bonus Project Checklist Items

• Implement delayed/scheduled jobs
• Add job progress tracking
• Create job cancellation functionality
• Implement multiple worker pools
• Add job result storage
• Create monitoring dashboard

Inspiration (Any companies/libraries similar)

• Bull
• Celery
• AWS SQS

Hint/Code snippet to start

class TaskQueue {
  constructor() {
    this.queue = [];
    this.processing = false;
  }

  async enqueue(job) {
    this.queue.push({ ...job, status: 'pending', id: Date.now() });
    this.process();
  }

  async process() {
    if (this.processing || this.queue.length === 0) return;
    this.processing = true;
    const job = this.queue.shift();
    job.status = 'processing';
    try {
      await this.executeJob(job);
      job.status = 'completed';
    } catch (error) {
      job.status = 'failed';
      job.retries = (job.retries || 0) + 1;
    }
    this.processing = false;
    this.process();
  }
}