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Feature Inventory

F1: Real-Time Dispatch

F2: Dynamic Routing & Fares

F3: OTP Ride Lifecycle

F4: Dual Persona Auth

F5: Kinetic Bottom Sheets

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System Design

System Design Index

14.1 Requirements & Capacity

14.2 Architecture Styles

14.3 Networking & WebSockets

14.4 Load Balancing & Scaling

14.5 Databases & Storage

14.6 Caching Strategies

14.7 Messaging & Queues

14.8 Concurrency & Consistency

14.9 Reliability & Resilience

14.10 API Design & Limiting

14.11 Security Architecture

14.12 Geospatial Search & Index

14.13 Real-Time Systems

14.14 Observability & Ops

14.15 Performance Engineering

14.16 Cost & Trade-offs

14.17 Classic System Design

Decisions Log

Interview & Readiness

Interview Q&A (150+)

Gaps & Improvements

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Master Checklist (275)

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14.16 Cost & Trade-Offs

Cost modeling comparing Google Maps Platform versus self-hosted OpenStreetMap (OSRM) and Mapbox at 100x scale.

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14.16 Cost & Trade-Offs ​

14.16 Cost & Trade-Offs