This challenge builds on Cake Shop 2 - Scaling Up. Complete it first for the best experience.
Sweet Crumbs Bakery is now franchising internationally - launching in 5 countries across 3 continents. Each region has its own catalog, pricing (local currency), and regulatory constraints (GDPR in Europe, data residency in Asia).
Customers expect the same fast experience regardless of location, and franchise owners need a dashboard to manage their local catalog and view orders.
Key challenges:•Latency for users on the other side of the globe from the origin server.•Data that needs to stay in-region (EU orders must stay in EU).•A unified authentication system across all regions.•Handling currency conversion and tax rules per locale.
The bakery expands to 5 countries. Design for multi-region, currency, and localization. Build this architecture under realistic production constraints, then validate tradeoffs in the design lab simulation.
Clarify requirements: Global expansion -- users in Europe and Asia experience high latency from a US-only server. Need to serve content from multiple regions.
Estimate scale: Assume 500k DAU globally. Latency from US to Europe/Asia is 150-300ms. Target: <100ms for all users.
Pick components:
Key tradeoffs to discuss: