Notes from systems we shipped.
Written up because the constraint was interesting, not to hit a publishing schedule. Everything here comes out of work we delivered.
- 7 min read
Multi-tenant when every tenant wants a different schema
Serving many schools from one platform means no two of them track the same fields — and the permission model has to follow relationships, not role names.
- SaaS
- Multi-tenancy
- Access Control
- 5 min read
Offline-first is an architecture, not a feature
You cannot add offline support at the end. It decides where your data lives and who is allowed to be authoritative — which means it decides almost everything.
- Architecture
- Offline-First
- 6 min read
Enforcing quotas on a 10 kbps link
When the connection is too slow and too intermittent to ask permission, the decision has to move to the device. What that changes about the rest of the system.
- Edge
- IoT
- Architecture
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