A regional logistics operator
Rebuilt a dispatch platform that was falling over during peak delivery windows.
Result
p95 API latency
380ms
↓ from 4.1s
Peak-hour timeouts
0/day
↓ from ~40/day
Challenge
The existing dispatch system was a monolithic PHP app with no queueing — driver assignment ran synchronously in the request cycle and timed out under load during the evening delivery peak.
Approach
Rebuilt the assignment logic as an event-driven queue on Laravel Horizon, moved route optimization to a background worker, and added Redis-backed rate limiting on the driver-facing API.
Outcome
Dispatch requests that used to queue behind synchronous route calculation now return immediately, with assignment completing asynchronously in the background.
Stack
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Tell us what's breaking under load, and we'll tell you what it would take to fix it.