case study SASN

An enterprise-grade notification system built around a fire-and-forget pipeline — triggering mass announcements and SMS/email alerts with millisecond precision using Redis-backed queues and job chunking.

Project

SASN – Enterprise Event-Driven Ecosystem

SASN – Enterprise Event-Driven Ecosystem

Tech Stack

React.jsInertia.jsLaravelTailwindRedis

Source Code

Problem

Sending announcements and notifications to hundreds of students simultaneously caused server timeouts and request failures.
Synchronous email/SMS delivery blocked the UI — users waited seconds or minutes before receiving feedback.
No mechanism to handle large recipient lists efficiently; processing everything in one request caused memory exhaustion.
Failed deliveries had no retry logic, meaning missed notifications were silently dropped.
The system lacked visibility into delivery status, queue depth, and job failures.

Solution

Implemented a fire-and-forget pipeline — requests return instantly while heavy delivery jobs are dispatched asynchronously.
Used Redis-backed Laravel Queues to offload email and SMS dispatching entirely off the request lifecycle.
Applied Job Chunking to split massive recipient lists into manageable batches, preventing memory spikes.
Built automatic retry logic with exponential backoff for failed delivery jobs to ensure reliable delivery.
Added queue monitoring to track job throughput, failure rates, and delivery status in real time.

Result

<50ms Response Time

Announcements trigger and return immediately — no waiting regardless of recipient count.

1000+ Recipients Per Job

Job chunking handles massive batches without memory exhaustion or server strain.

99%+ Delivery Rate

Retry logic with backoff ensures near-perfect delivery even when external SMS/email providers fail.