Design a Region-Routed Storage Layer for a Nordic EdTech
Overview
What this challenge is about.
Design a region-routed storage layer for a Nordic EdTech, analyze access logs and compare consistency costs. Get a verifiable certificate.
The scenario
Lärnova is a K-12 education-technology company headquartered in Stockholm with about 75 employees, serving roughly 4 million students across the Nordic and Baltic countries under strict European data-protection rules. Its assignment-upload feature currently writes every file to one cloud storage bucket in a single northern-Sweden region, a design that recently collided with Estonian municipal rules requiring local data to remain inside Estonia.
The Brief
What you'll do, and what you'll demonstrate.
Lärnova must store student-uploaded assignments so that each country's data legally stays in its own region without making cross-border teacher access slow or operating costs unsustainable.
Earning criteria — what you'll demonstrate
- Translate observed access patterns into routing and replication decisions for a geographically distributed storage system.
- Compare strict and eventual cross-region consistency models and justify a choice against real traffic and legal constraints.
- Design a metadata schema and lookup service that maps records to the region where their data legally resides.
- Build an honest total-cost-of-ownership comparison that includes storage, data-transfer-out, replication, and operational labor.
- Communicate a technical architecture as a defensible data-residency argument for non-technical stakeholders.
Program Fit
Where this fits in your program.
Sharpens the same skills your degree expects you to demonstrate.
Aligned coursework coming soon.
Skills
Skills you'll demonstrate.
Each one shows up on your verified credential.
- Geo Distribution
Apply geo distribution to solve real industry problems and demonstrate production-level capability.
- Data Residency
Apply data residency to solve real industry problems and demonstrate production-level capability.
- Cockroachdb
Apply cockroachdb to solve real industry problems and demonstrate production-level capability.
- Cost Modeling
Apply cost modeling to solve real industry problems and demonstrate production-level capability.
- Consistency Models
Apply consistency models to solve real industry problems and demonstrate production-level capability.
- Schema Design
Apply schema design to solve real industry problems and demonstrate production-level capability.
Careers
Career paths this challenge builds toward
Completing this challenge demonstrates skills that transfer directly to these roles:
Cloud Infrastructure Engineer
This challenge mirrors a core cloud-engineering task: turning legal and traffic constraints into a geographically distributed storage design with an honest cost story. You leave able to justify region placement, replication, and failover choices to both engineers and reviewers.
This challenge sharpens
- geo-distribution
- data-residency
- cost-modeling
Backend / Distributed Systems Engineer
Building the metadata service forces real decisions about schema design and how strong cross-region consistency must be under failure. That is the daily work of a distributed-systems engineer who owns data placement and the trade-offs that come with replicating state across regions.
This challenge sharpens
- cockroachdb
- consistency-models
- schema-design
Cloud Solutions Architect
You practice the architect's full loop: read the situation, weigh consistency against cost, and present a defensible recommendation a business can act on. The compliance memo and cost model are exactly the artifacts architects use to win stakeholder buy-in.
This challenge sharpens
- geo-distribution
- cost-modeling
- data-residency