Designing a Constraint-Driven Booking System for Pet Services

A deep dive into architecting a real-time booking platform — covering GraphQL schema design, conflict detection, dynamic pricing engines, and multi-role access built for production operations.

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System Complexity

A single platform coordinating lodging, daycare, and grooming — each with distinct booking rules, time constraints, and pricing logic.

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Real-Time Constraints

Availability, pricing, and unit assignment all needed to update live as bookings changed — with zero tolerance for conflicts.

This article covers the technical decisions behind building this system. Each section explores a different layer of the architecture.