Engineering Blog
The Technical Ledger
Architecture notes, compliance guides, and database design insights from the engineers building Cohort.
July 15, 2026•Database & Security
Implementing Multi-Tenant Data Isolation with PostgreSQL RLS
How we prevent cross-campus data leakage and enforce strict database-level isolation inside a unified Next.js/Expo school ecosystem.
June 28, 2026•Regulations & Privacy
DPDP Act, 2023: Designing Systems to Shield Minor Student Data in India
A deep dive into child data protection policies, securing parental consent, and enforcing strict data residency rules in AWS ap-south-1 Mumbai region.
May 14, 2026•Architecture & Compliance
Immutable Auditing under Section 65B of the Indian Evidence Act, 1872
How automated triggers compile secure audit records on all structural modifications, preventing log deletion and ensuring relational integrity.
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