Logistics / SaaS

Logistics Coordination Engine

A real-time dispatch and coordination platform for last-mile delivery fleets.

Problem Context

Manual dispatching and location latency (>30s) led to inefficient route assignments and high fuel costs.

The Engineering Solution

High-frequency WebSocket coordination pipeline with PostGIS spatial indices. Driver locations updated every 2s for instant routing and closest-driver assignment.

Lessons Learned

"Working with WebSockets taught me about persistent connection management and the importance of backpressure in reactive streams."

Production Stack

Frontend

Flutter Mobile (Driver & Dispatcher)

Backend

Spring WebFlux (Reactive Streams)

Database

PostgreSQL + PostGIS

Caching

Redis Geo-indices

Infrastructure

Docker / AWS

Engineering Metrics

32%Latency Reduction

2sDriver Sync

<1sAssignment

100%Visibility

Verified Results

32% reduction in coordination latency
22% decrease in fuel costs via route optimization
Instant driver assignments (< 1s)
Real-time visibility for 100% of fleet