2026-07-042 min read
Caching Economics: Building Cost-Efficient LLM Pipelines
Learn how prompt caching cuts API bills by up to 90% and evaluate your token economics live using our interactive calculator.
#PromptCaching#Gemini#Claude
FS AI HUB PLATFORM
Build. Learn. Deploy. Intelligently.
Deep architectural specs, production boilerplates, and systems-level tutorials for full-stack AI engineers. Learn how to scale RAG, build reliable agent harnesses, and optimize LLM costs.
The Full-Stack AI Curriculum
BOOK 1 · ARCHITECTURE
The Practical Guide to Agentic AI Systems
Master systems-level design patterns for models, tools, memory, evaluation harnesses, and security boundaries. Outlines 46 chapters of conceptual depth.
Status: Writing$39
BOOK 2 · HANDS-ON BUILD
Full-Stack AI Applications from Scratch
Build one cohesive customer agent using React, FastAPI, LangGraph, pgvector, and Redis. Includes step-by-step code annotations.
Status: Outlining$59
BOOK 3 · ENTERPRISE SCALE
Scaling AI Systems: Event-Driven Infrastructure
Scale to millions of requests with Kafka document ingestion, Temporal durable workflows, Kubernetes, and distributed tracing.
Status: In Planning$79
CURRICULUM SPECIFICATION
Structured Learning Paths
Explore comprehensive engineering roadmaps split by technology stack and core system domains.
Frontend AI Engineering
Learn Vercel AI SDK patterns, dynamic Generative UI integrations, streaming components, and prompt interfaces.
Backend AI Foundations
Master FastAPI routers, server-sent events (SSE), tool/function calling schemas, and guardrail interception pipes.
Agent Orchestration
Build cyclical graphs in LangGraph, define multi-agent teams, coordinate states, and inject Human-in-the-loop checkpoints.
Production Infrastructure
Optimize pgvector indexes, handle semantic cache hits with Redis, manage queue architectures, and scale containers.
OPEN SOURCE BLUEPRINTS
Hands-On Projects
Explore production-ready repositories containing complete, runnable code templates.
PROJECT 01 · CODE SCATTER
LangGraph Ticket Assistant
A multi-agent customer ticket router that reviews requests, calls lookup APIs, and escalates unresolved paths to human channels.
Stack: FastAPI, LangGraph
PROJECT 02 · INTERACTIVE GRAPH
Generative UI SSE Chatbot
A Next.js 15 chatbot client that renders custom React widgets dynamically on model tool calls, streaming messages over SSE.
Stack: Next.js, Vercel AI SDK