The API Rate Limit Catastrophe In modern B2B SaaS development at Smart Tech Devs, your application rarely lives in isolation. You constantly communicate with external services: billing via Stripe, CRM syncing via Salesforce, or email campaigns via Resend. The architectural trap occurs when you combine the immense speed of Laravel Queues with the strict rate limits of these third-party APIs. If you dispatch 5,000 "Sync Customer" background jobs, your Laravel Horizon workers will attempt to execute them as fast as your CPU allows. If the third-party API only allows 50 requests per minute, your first 50 jobs will succeed, and the next 4,950 will instantly crash with an HTTP 429: Too Many Requests error. This floods your failed jobs table, triggers false alarms in Sentry, and breaks your data synchronization. The Enterprise Solution: Redis Job Middleware To architect durable background processing, we must teach our queue workers to respect external boundaries.…