CHAPTER 0101
Architecting high-fanout, read-dominant workloads: URL redirection, multipart object storage, and CDN caching.
LEARNING PATH 02
Large-scale application systems
Design payments, messaging, search, booking, social and multi-tenant applications.
CURRICULUM SEQUENCE
Problem-Oriented Chapters
CHAPTER 0202
GOP-aligned transcoding DAGs, HLS/DASH segment delivery, and client-side adaptive bitrate (ABR) control.
CHAPTER 0303
Multi-channel push notifications, WebSocket chat presence, and OT/CRDT collaborative editing.
Step 54Distributed Notification Platform: Multi-Channel Delivery, Rate Limiting, Deduplication, and Fan-Out Queues↗Step 55Real-Time Chat & Presence Systems: WebSockets, Message Ordering, and Ephemeral Heartbeats↗Step 56Real-Time Collaborative Editing: Operational Transformation vs. CRDT Architecture↗
CHAPTER 0404
Hybrid push/pull timeline fan-out under celebrity skew and low-latency FST prefix autocomplete.
CHAPTER 0505
Immutable double-entry financial ledgers, idempotency keys, and strict balance verification.
CHAPTER 0606
Handling extreme inventory contention, reservation holding, and flash-sale checkout spikes.
CHAPTER 0707
Pool vs. silo tenant models, noisy neighbor Deficit Round Robin throttling, and row-level security.
CHAPTER 0808
Multi-region active-active data routing, GDPR residency compliance, and the end-to-end Flash-Sale Capstone.