Summary

Proximity services leverage proximity data to enhance user experiences, streamline operations, and unlock new opportunities across various industries. This chapter delves into the complexities of designing proximity services, starting from defining functional and non-functional requirements to addressing core challenges and technical concepts. Real-world use cases highlight the diverse applications of proximity services, ranging from ride-sharing and local search to food delivery and social networking apps.

The chapter outlines the process of designing a proximity service, focusing on functional requirements such as searching nearby restaurants and placing orders, and non-functional requirements including availability, scalability, latency, consistency, and reliability. APIs for restaurant search and order placement are provided along with estimates and calculations for handling traffic spikes and user interactions.

We then moved on to solving the core challenge in this...