Free resource hub
Free system design pages you can share under the brand.
This is the public-facing top of the funnel: free resources for engineers who want better system design answers. Use these pages for search traffic, community threads, GitHub, DMs, and brand-led distribution.
All free resources
The brand’s search and sharing surface.
Send the most relevant page first. Keep the store one click behind the free value.
Free System Design Framework
The answer-structure page for engineers who know the basics but still sound generic.
PlaybookFree Staff-Level Playbook
Scope control, center-of-gravity thinking, and the difference between mid and strong answers.
StripeFree Design Stripe Breakdown
Correctness, idempotency, and ledger integrity.
TicketmasterFree Design Ticketmaster Breakdown
Contention, reservation ownership, and oversell prevention.
WhatsAppFree Design WhatsApp Breakdown
Delivery semantics, offline sync, and session routing.
YouTubeFree Design YouTube Breakdown
Upload, transcoding, manifests, and CDN delivery.
UberFree Design Uber Breakdown
Dispatch, matching, location streams, and marketplace dynamics.
GeminiFree Design Gemini Breakdown
Assistant systems, tools, multimodal orchestration, and latency.
AnthropicFree Design Anthropic Breakdown
Safety as a system problem, not a policy afterthought.
xAIFree Design xAI Breakdown
Productized agents, real-time retrieval, and tool-integrated AI flows.
PerplexityFree Design Perplexity Breakdown
Grounded answer engines, citations, and trust-preserving retrieval.
Upgrade path
Free pages earn attention. The paid library wins depth.
Once someone gets value from the free pages, the paid library becomes the natural next step: full writeups, stronger answer shape, and broader coverage across the highest-signal prompts.