Tag: system-design

All the articles with the tag "system-design".

• AEGIS: Building a PII Data Privacy Vault from Scratch

  Published:Jun 3, 2026 |  at 10:00 AM

  (12 min read)

  A deep dive into AEGIS — a PII Data Privacy Vault built in Go. Covers tokenization, AES-256-GCM encryption, role-based access with field-level masking, append-only audit logs, and an LLM proxy that stops raw PII from ever reaching external AI models.

• System Design: CQRS and Event Sourcing

  Published:Jun 1, 2026 |  at 06:00 AM

  (6 min read)

  Command Query Responsibility Segregation — why reads and writes fight in one database, how to separate them with events, and where you've already seen CQRS in every system we designed.

• System Design: Google Drive — Collaborative Document Editing

  Published:Jun 1, 2026 |  at 06:00 AM

  (16 min read)

  Designing Google Drive at scale — operational transformation, optimistic client updates, snapshot + operation log storage, presence, and handling 10M write operations per second.