{
  "lesson": "18-agno-and-mastra-runtimes",
  "title": "Production Agent Runtimes",
  "questions": [
    {
      "stage": "pre",
      "question": "Which language pairing does the lesson recommend for each runtime?",
      "options": [
        "Agno for TypeScript, Mastra for Python",
        "Both are Go-first",
        "Agno for Python, Mastra for TypeScript",
        "Both are Rust-first"
      ],
      "correct": 2,
      "explanation": "Agno is Python (FastAPI-shaped); Mastra is TypeScript (Vercel AI SDK-shaped)."
    },
    {
      "stage": "pre",
      "question": "What is Agno's recommended production deployment shape?",
      "options": [
        "A long-lived stateful daemon",
        "A serverless cron worker only",
        "A stateless session-scoped FastAPI backend; each request starts a fresh agent and session state lives in a DB",
        "A WebSocket-only server"
      ],
      "correct": 2,
      "explanation": "Stateless FastAPI per request; session state externalized to a DB."
    },
    {
      "stage": "check",
      "question": "What are Mastra's three primitives?",
      "options": [
        "Node, Edge, State",
        "Plan, Worker, Solver",
        "Agents, Tools, Workflows",
        "Actor, Message, Inbox"
      ],
      "correct": 2,
      "explanation": "Agents (LLM + role), Tools (Zod-typed), and Workflows are Mastra's three primitives."
    },
    {
      "stage": "check",
      "question": "Roughly what agent-instantiation cost does Agno target per its docs?",
      "options": [
        "About 1 second and 1 GiB per agent",
        "About 2 microseconds with about 3.75 KiB per agent",
        "About 200 milliseconds and 100 MiB per agent",
        "About 10 minutes and 4 GiB per agent"
      ],
      "correct": 1,
      "explanation": "Agno's docs cite about 2 microseconds and about 3.75 KiB per agent."
    },
    {
      "stage": "check",
      "question": "What does Mastra's Unified Model Router give?",
      "options": [
        "A vector DB layer",
        "A single client surface for thousands of models across many providers",
        "A graph checkpointer",
        "A queue for tool calls"
      ],
      "correct": 1,
      "explanation": "Mastra's Unified Model Router cites 3,300+ models across 94 providers."
    },
    {
      "stage": "post",
      "question": "When is perf-for-perf's-sake the wrong reason to pick Agno?",
      "options": [
        "When using Langfuse",
        "When the workload is one slow agent call per request and overhead is not the bottleneck",
        "When using Python 3.13",
        "When deploying to AWS"
      ],
      "correct": 1,
      "explanation": "2 microseconds matters at chat fan-in scale, not for a single slow call per request."
    },
    {
      "stage": "post",
      "question": "What licensing surface should you read carefully before forking Mastra?",
      "options": [
        "There is no license file",
        "ee/ directories are source-available rather than Apache 2.0 and restrict commercial use",
        "All of Mastra is GPL",
        "Mastra requires CLA but no license review"
      ],
      "correct": 1,
      "explanation": "Mastra is Apache 2.0 except for ee/ which is source-available; check the restrictions before forking."
    }
  ]
}