Build typed APIs
Write modern Python, Pydantic v2 contracts, FastAPI routes, dependencies, middleware, pagination, and tests.
A free 56-page zero-to-production curriculum
Python, PostgreSQL, Redis, and Intelligent Systems — From Zero to Production
This complete FastAPI tutorial takes a true beginner from the terminal and HTTP to secure production AI backends. You will build one evolving system with Python, PostgreSQL, carefully justified Redis, RAG, tools, agents, evaluation, observability, containers, and cloud operations—then prove mastery through four demanding capstones.
API boundary
FastAPI · Pydantic · Identity · Authorization
Durable truth
PostgreSQL · SQLAlchemy · Alembic
Ephemeral speed
Optional Redis · Queue · Streams
AI capability
RAG · Tools · Agents · MCP · Memory · Evaluation
Production shell
Security · Tests · Telemetry · CI/CD · Recovery
You will learn backend engineering as one connected discipline. Each layer exists to protect the next: typed contracts protect application boundaries, durable data protects truth, and production controls make AI capability measurable, safe, and recoverable.
Write modern Python, Pydantic v2 contracts, FastAPI routes, dependencies, middleware, pagination, and tests.
Model PostgreSQL constraints, transactions, SQLAlchemy repositories, Alembic migrations, and justified Redis state.
Create provider gateways, RAG, cited answers, safe tools, workflows, bounded agents, MCP, memory, and evaluations.
Enforce identity, tenant isolation, least privilege, budgets, human approval, supply-chain controls, and red-team cases.
Use idempotency, backpressure, logs, metrics, traces, SLOs, load tests, fallbacks, backups, and recovery drills.
Build containers, CI gates, managed deployments, canaries, rollbacks, incident runbooks, and architecture decisions.
Every technical chapter moves through intuition, mechanics, production judgment, and mastery. You predict before running, verify with evidence, test failure paths, and defend tradeoffs. The same SupportDesk AI product grows with your ability.
Build the mental model before learning framework syntax.
Create the smallest correct vertical slice with explicit paths.
Use tests, responses, traces, query plans, or evaluations as proof.
Handle security, reliability, cost, failure, recovery, and alternatives.
Start with the first page if you are new. Experienced engineers can jump to a focused part, but the production and AI chapters deliberately depend on security, data, and failure concepts taught earlier.
Not at first. PostgreSQL owns durable truth. Redis joins only when measured work needs shared, expiring, low-latency state such as a cache, rate limit, quota, stream, queue, or lease. The application must remain correct if Redis is empty or unavailable.
Deploy the same architecture through the free Microsoft Azure tutorial, deepen your agent engineering practice with Digital FTEs: Engineering, and study implementation strategy through AI Native Consulting and Forward Deployed Engineering.
Need an expert system review?
Discuss architecture, AI safety, platform design, or a production migration with Muhammad Usman Akbar.
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Build each layer, test the failure paths, and finish the capstones with evidence that another engineer can reproduce.