Back-of-the-Envelope Math, Replicas, Sharding & Hashing

Status: Planned in curriculum roadmap (phase5-devops-and-observability/04-system-design-mastery/01-capacity-estimation-and-scaling). Complete earlier phases first, or use the backend-course-author skill to expand this lesson.

At a glance

• Master the production mechanics of Back-of-the-Envelope Math, Replicas, Sharding & Hashing.
• Diagnose and repair common AI-generated anti-patterns in this domain.
• Apply these patterns directly to the PulseForge capstone project.